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Paratransgenesis: a promising new strategy for mosquito vector control


The three main mosquito genera, Anopheles, Aedes and Culex, transmit respectively malaria, dengue and lymphatic filariasis. Current mosquito control strategies have proved unsuccessful, and there still is a substantial number of morbidity and mortality from these diseases. Genetic control methods have now arisen as promising alternative strategies, based on two approaches: the replacement of a vector population by disease-refractory mosquitoes and the release of mosquitoes carrying a lethal gene to suppress target populations. However, substantial hurdles and limitations need to be overcome if these methods are to be used successfully, the most significant being that a transgenic mosquito strain is required for every target species, making genetically modified mosquito strategies inviable when there are multiple vector mosquitoes in the same area. Genetically modified bacteria capable of colonizing a wide range of mosquito species may be a solution to this problem and another option for the control of these diseases. In the paratransgenic approach, symbiotic bacteria are genetically modified and reintroduced in mosquitoes, where they express effector molecules. For this approach to be used in practice, however, requires a better understanding of mosquito microbiota and that symbiotic bacteria and effector molecules be identified. Paratransgenesis could prove very useful in mosquito species that are inherently difficult to transform or in sibling species complexes. In this approach, a genetic modified bacteria can act by: (a) causing pathogenic effects in the host; (b) interfering with the host’s reproduction; (c) reducing the vector’s competence; and (d) interfering with oogenesis and embryogenesis. It is a much more flexible and adaptable approach than the use of genetically modified mosquitoes because effector molecules and symbiotic bacteria can be replaced if they do not achieve the desired result. Paratransgenesis may therefore become an important integrated pest management tool for mosquito control.


Mosquito-borne diseases

Since the late nineteenth century, when mosquitoes were first associated with the transmission of pathogens to humans and other vertebrates, a number of mosquito species have been intensively studied. The three main mosquito genera, Anopheles, Aedes and Culex, transmit the causative agents of malaria, dengue and filariasis, respectively, as well as a variety of mosquito-borne zoonotic arboviruses, such as West Nile Virus (WNV), Saint Louis Encephalitis Virus (SLEV) and Eastern Equine Encephalitis Virus (EEE). Because of the inherent difficulty of mosquito control and therefore the implantation of surveillance strategies, there still is a significant morbidity and mortality due to these diseases [14], along with an increase in various other diseases caused by insect-vectored pathogens of epidemiological importance [2, 3, 58]. The increase in the geographic distribution of mosquitoes is followed by the emergence of viruses and diseases in new areas [9].

For example, the number of malaria cases has increased as a result of deteriorating health systems, increased anopheline resistance to insecticides, Plasmodium resistance to antimalarial drugs and the time taken to develop an effective vaccine. Malaria is the world’s most epidemiologically important vector-borne disease according to World Health Organization [1]. Cases of the disease have been reported in more than 100 countries, and approximately 3 billion people around the world live in endemic areas. There are estimated to be over 200 million cases of malaria and 800 thousand malaria-related deaths every year [1, 10, 11].

Dengue, including dengue hemorrhagic fever and dengue shock syndrome (DSS), which is transmitted by Aedes mosquitoes, is rapidly becoming a worldwide disease, threatening a third of the world’s population. There are estimated to be 50 to 100 million cases every year [2, 3, 5, 6, 8, 12]. Aedes aegypti is the main vector of the dengue virus and is a highly invasive species that has been inadvertently spread around the world by man [2, 3]. It is found in tropical and subtropical regions, mainly in urban environments, where it has adapted to artificial breeding sites. Bed nets are ineffective, since Ae.aegypti has its peak activity during the day, making breeding-site management and the use of insecticides the main forms of control [13].

Lymphatic filariasis, which is caused by Wuchereria bancrofti, affects more than 120 million people around the world [4, 14]. It is transmitted mainly by mosquitoes of the genus Culex and causes irreversible damage to the host [11, 15]. A considerable number of arboviruses can also be transmitted by many species in the genus Culex, some of which are of great public health importance, such as WNV [16].

Although great efforts have been made, there are currently no effective vaccines against dengue, filariasis or malaria, and specific treatments are only available for malaria and filariasis. Therefore, the most effective way to prevent vector-borne diseases is to control mosquito populations [1721]. This review, which was motivated by the situation described above, discusses the current state of knowledge about paratransgenesis in mosquitoes, emphasizing the failure of different mosquito control strategies and alternative paratransgenic approaches.

Mosquito-control strategies

Vector-control strategies in the last century were based on chemical agents such as dichloro-diphenyl-trichloroethane (DDT). Although insecticides have been successfully used to control mosquitoes of the genera Aedes and Anopheles, current ecological and environmental protection standards do not allow such approaches because of the adverse effects of many insecticides on non-target species, including humans, their environmental impact, the contamination of soil and water and the development of selective processes and subsequent mosquito resistance to insecticides [5].

New strategies therefore had to be created to replace the use of insecticides. These include Integrated Pest Management (IPM), in which insecticides should be used only as a last resort in epidemics. IPM guidelines are based on environmental planning, public awareness and biological control and seek to control the mosquito population more efficiently while preserving the environment from contamination [22].

The great reproductive capacity and high genomic flexibility of mosquitoes make management of these insects very difficult. Their high genomic flexibility is demonstrated by the resistance of mosquito populations to chemical and biological insecticides as well as by their ability to adapt to different environmental conditions and to climate changes [7, 18, 2325]. Therefore, effective alternative forms of control that can be used on a large scale and are environmentally friendly are urgently needed and should be included in IPM [2628].

Genetic control methods have proven to be promising strategies for mosquito control. Two such methods have been developed: the use of refractory mosquitoes to replace vector populations and the release of mosquitoes carrying a lethal gene to suppress target populations. The first approach is self-sustaining, and only one or a few releases are needed for the exogenous gene to increase its frequency and be fixed in the target population (inoculative releases). The second strategy is self-limiting, since repeated releases are necessary to keep the lethal gene acting in the target population (inundative releases) [2931].

Genetic control strategies for population replacement rely on inhibiting the development of pathogens at some point in the vector life cycle. When released into the area of interest, the transgene is introduced in the target population, blocking transmission of the disease caused by that particular pathogen [32]. This technique is still under development and has not yet been used on a large scale. Self-sustaining techniques rely basically on two components: a refractoriness mechanism and a gene driver to spread the target gene in the population. Several mosquito species have been genetically modified to be resistant and disrupt parasites transmission cycles [3335]. The classic study by Ito et al. [33] transformed Anopheles stephensi to express a small peptide, known as salivary gland and midgut peptide 1 (SM1), in the midgut under the control of the carboxypeptidase promoter, blocking around 80 % of oocyst development. Since this study, several species of anophelines have been transformed to express anti-malaria molecules [3639], including Anopheles gambiae, the main malaria vector in Africa [38], with a similar blocking effect. However, to effectively control vectored diseases such as malaria, it is crucial to establish a repertoire of effector genes and tissue-specific promoters for their expression to enable these genes to have maximum effect, i.e., make the mosquito 100 % refractory to the parasite with minimum fitness cost. There are still several epidemiological risks and major problems that need to be dealt with before population-replacement approaches can be tested in the field [39].

The Release of Insects with Dominant Lethality (RIDL) system was proposed simultaneously by Heinrich & Scott [40] and Thomas et al. [41] and is based on the integration of a dominant lethal gene associated with a female-specific promoter. When released into the wild, genetically modified males will mate with wild females, resulting in viable male offspring but inviable female offspring because of the gene’s sex-specific lethality, which is expressed only in the absence of a chemical repressor used to silence the effector gene [42]. A variety of genes are available for this purpose, the only requirement being that they cause death when expressed [43]. When a female-specific promoter is used, males carry the gene but do not express it and are able to survive with or without the chemical repressor, while females die in the absence of the repressor [44].

As suppression strategies based on genetic modification have begun to be used in the field, the lack of regulations governing the use of GMM has become a significant challenge. This lack of regulations is not restricted to developing countries and strategies based on the use of recombinant DNA. Laws and regulations need to be created, risk analyses carried out and public opinion assessed, a process made all the more arduous by the regulatory agencies’ lack of experience. Furthermore, the best strategy for implementing control programs based on genetic modification is neither simple nor obvious [11]. The self-limiting nature of reproductively sterile insects (whether sterilized by radiation, cytoplasmic incompatibility or RIDL) tends to simplify the use of this technique in the field, since the transgene is not fixed in the wild population [11].

From the perspective of transgenic insect-release programs, such as RIDL, it is extremely important to detect any resistance in the target population that could adversely affect the effectiveness of the program soon enough to take measures to remedy the problem. Monitoring strategies must provide suitable warning about these problems in time to allow them to be remedied [11].

Transgenic mosquitoes or paratransgenesis in mosquitoes?

Considerable effort has been devoted to the genetic transformation of mosquitoes, and although refractory mosquitoes and mosquitoes carrying a lethal gene have been produced [33, 44], there are still significant issues to be dealt with before the use of these techniques in the field can be considered, such as drive mechanisms, transposon stability issues, sibling species complexes and multiple subspecies of mosquitoes [33, 45]. All of these factors need to be taken into account before the introduction of transformed mosquitoes into wild populations can be considered [46]. Although these obstacles can be overcome with time, the issue of new, much-needed control measures remains. In this regard, paratransgenesis (the genetic modification of symbiotic organisms, such as bacteria and fungi) would appear to be the most suitable solution [31, 4648].

The paratransgenesis alternative

Paratransgenesis is based on the use of symbiotic bacteria to express effector molecules inside the target vector [4751]. The symbiotic bacteria are genetically modified to express effector molecules and then reintroduced into the mosquito, where they produce the desired effect [49, 5255]. Although studies of the microbiota of wild mosquitoes have been carried out, identifying its full spectrum and potential is yet to be done [14, 44, 52, 5661]. Knowledge of mosquito microbiota is essential for a paratransgenic system to work, and is particularly important to identify bacteria that are well established in mosquitoes and can be transmitted to the next generation [14].

For a bacteria to be used in paratransgenesis three key components are required: an effector molecule that achieves the desired effect; a mechanism to display or excrete the effector molecule on the surface of the bacteria; and bacteria that can survive in the mosquito long enough to produce the expected amount of effector molecules and thereby achieve the desired effect in the mosquito [45, 46].

Identification of suitable commensal bacteria that are non-pathogenic to humans or animals among the many organisms that insects harbor, particularly in their digestive systems, is paramount for the success of a paratransgenic system [62]. In mosquitoes these bacteria are involved in various biological functions associated with digestion, primarily in the midgut. There is a close association between blood-dependent insects and symbiotic microorganisms that help the anabolic processes of vitellogenesis and ovogenesis [63]. Eradication of these bacteria leads to a decline in fecundity and a slower growth rate. Interference with the digestion of proteins in mosquito blood meals can reduce fecundity and may represent a new approach for controlling mosquito populations and preventing the transmission of pathogens [63].

The chosen bacteria should be capable of colonizing a wide variety of mosquito species so that they can be deployed in different species and isolated strains. Producing recombinant bacteria in sufficient numbers is much simpler than creating transgenic mosquitoes [46, 64].

Furthermore, the number of bacteria increases dramatically (100 to 1000 of times) after ingestion of blood [65], resulting in a proportional increase in the amount of effector molecules expressed and secreted by GM bacteria [66], leading to various possible outcomes: obstructing pathogen transmission, reducing the mosquito’s vector capacity, preventing fertilization of eggs, interfering with embryogenesis and causing the death of the mosquito [49, 52, 54, 55].

Symbiotic bacteria and fungi for use in paratransgenesis

Symbiotic bacteria can be found in several insects, such as in Ae. aegypti where they probably play a critical role in metabolic processes and may be important for these insects as they colonize their internal organs and other tissues. The elimination of obligatory symbionts would result in fitness loss. Wide-ranging studies of these symbiotic microorganisms might provide important data for the development of new control strategies [63].

Pidiyar et al. [14] found a wide range of symbiotic bacteria in various mosquito species: Bacillus spp., Staphylococcus spp., Pseudomonas spp. and Aeromonas culicicola in Culex quinquefasciatus; Serratia marcescens and Klebsiella ozonae; Pseudomonas aeruginosa and Enterobacter agglomerans in Culex pipiens; and two strains of A. culicicola in Ae. aegypti. Dinparast et al. [67] reported thirteen species of bacteria in An. Maculipennis and An. Stephensi.

In studies with malaria vectors, a wide variety of bacteria species were isolated from the midguts of wild mosquitoes of the genus Anopheles in East and West Africa [53]. In southern Mexico, Gonzalez-Ceron et al. [57] found Enterobacter amnigenus, Enterobacter cloacae, Enterobacter sp., S. marcescens, and Serratia sp. in Anopheles albimanus.

Bacteria of the genus Asaia have a stable association and are capable of quickly colonizing tissues in several mosquito species, such as An. gambiae, An. stephensi, Aedes albopictus, Ae. aegypti and mosquitoes from the Cx. pipiens complex. These bacteria can be cultured and genetically manipulated for subsequent reinsertion into the insect host and after blood feeding increase its population size exponentially. In addition, transmission from males to females during mating can be exploited to colonize mosquitoes in nature [51, 52, 68].

Straif et al. [69] investigated the prevalence of bacteria in the midguts of malaria vectors and identified bacterial candidates for paratransgenesis in cultured and uncultured midgut bacteria from wild-caught An. gambiae and An. funestus mosquitoes. Twenty different genera of bacteria were identified in both mosquito samples, the most common bacteria being Pantoea agglomerans. Dong et al. [70] showed that when Chryseobacterium meningosepticum was introduced into An. gambiae, it became the dominant bacteria in the mosquito’s midgut, indicating that this species has a competitive advantage in the gut environment.

Although a variety of symbiotic bacteria have been identified in mosquito microflora, existing conventional culture techniques do not allow all the components of the microbiota inhabiting any niche or environmental sample to be isolated and identified because it is not possible to simulate the conditions required for their growth in a laboratory [16]. However, this drawback can be overcome by ribosomal RNA (rRNA)-based sequence studies [14].

Paratransgenic approaches can also work with fungal species, which have the advantage of surviving in the environment for months as spores and, unlike bacteria which need to be ingested to infect mosquitoes, can infect mosquitoes directly through the cuticle [71]. Fang et al. [72] genetically transformed Metarhizium anisopliae to express the effector molecule SM1 and the antimicrobial toxin scorpine, which interfere with Plasmodium falciparum development, reducing mosquito infectivity. There were also shown the presence of fungi in Cx. quinquefasciatus by Pidiyar et al. [14], who found Aspergillus and Streptomyces spp. in this mosquito. GM bacteria or fungi could potentially be used in paratransgenesis to produce an environment-friendly, highly effective specific biopesticide Thomas & Read [71].


Rickettsiales, such as Wolbachia, an obligate intracellular gram-negative bacteria, can be found in the cytoplasmic vacuoles of insects, isopods, mites and nematodes [73, 74]. Maternally inherited, they can infect mosquito gonads and are therefore potential targets for delivering effector molecules in paratransgenic systems [53].

While many mosquito species can be infected by Wolbachia, epidemiologically important mosquitoes such as Ae. albopictus and Cx.pipiens are naturally infected, and the prevalence of Wolbachia in wild populations is high. There are several different phylogenetic groups of Wolbachia, and depending on the strain with which the mosquito is infected, crosses can be cytoplasmically compatible, incompatible or compatible in only one direction [75]. Wolbachia inflicts a severe selective pressure that quickly drives transovarial transmission of the bacteria through mosquito populations [76, 77].

There are three basic strategies for using Wolbachia to control vector populations: inserting the transgene directly into the Wolbachia genome and using cytoplasmic incompatibility mechanisms to suppress the target population and achieve the desired frequency in the target population; fixing the transgene in other cytoplasmic elements that are co-inherited with Wolbachia bacteria in the mosquito; and transforming the genome of the target mosquitoes and using cytoplasmic incompatibility as a gene insertion mechanism in the target population [74].

Transovarian transmission of Wolbachia has provoked considerable interest in paratransgenic systems, in which it is highly desirable to use bacteria that can spread through a population and are readily available [78, 79]. It is possible to infect several mosquito species with Wolbachia and produce different outcomes [80]. As wPip Wolbachia strains are found in the Cx. pipiens complex, exogenous bacteria do not need to be used, and control strategies can be based on Wolbachia. The transmission capacity and cytoplasmic incompatibility of this bacteria confirm its great potential for use in paratransgenesis. However, before it can be used, certain issues must be addressed. Firstly, intracellular bacteria require a cell culture to be maintained in the laboratory and, secondly, as effector molecules are excreted directly into the cytoplasm of host cells by Wolbachia, there must be a mechanism for these molecules to reach the hemolymph if they are to have the desired effect [45, 79, 81, 82].

Infection of Ae. aegypti by different Wolbachia strains leads to three outcomes: shortened lifespan, reducing their potential to transmit pathogens that have to infect adult mosquitoes to complete their development cycle [79]; limited susceptibility to infection with the dengue or chikungunya virus or the Plasmodium parasite [83]; and, depending on the strain of Wolbachia, induction of cytoplasmic incompatibility, with apparently no significant fitness cost and high horizontal transmission [79].

An. gambiae mosquitoes were found naturally infected with Wolbachia in wild population captured in Burkina Faso, Africa [84]. Hughes et al. [85] demonstrate that An. gambiae and An.stephensi microbiota prevent Wolbachia infection, but when the mosquito microbiota was removed with the use of antibiotics, Wolbachia was capable of infecting the mosquito and reaching maternal transmission to the progeny.

Wolbachia maternal transmission and further cytoplasmic incompatibility was successfully obtained by Bian et al. [86] in An. stephensi laboratory populations indicating that this bacteria has the potential to be used in a paratransgenic system for this species.

Although Wolbachia would appear to be an excellent candidate for a paratransgenesis system, caution should be exercised when using it, as Dodson et al. [87] showed that WNV infection was enhanced in Wolbachia-infected Culex tarsalis, a feature of Wolbachia that can jeopardize a control strategy based on this bacteria.

Effector molecules

Richins et al. [88] developed a system that can be used to transport large molecules produced inside a bacterium and display them on its surface. The system has been successfully used to display enzymes and antibodies [45] and represents a major step forward in the search for a successful paratransgenic system.

Testing for effector molecules for use in paratransgenesis systems, Riehle et al. [46] showed that the formation of Plasmodium berghei oocysts in An. stephensi mosquitoes can be reduced by expression of SM1 and mPLA2 by commensal recombinant Escherichia coli.

Yoshida et al. [53] were able to completely block the development of P. berghei in the midgut of An. stephensi mosquitoes using a single-chain antibody fragment (scFv) excreted by recombinant E. coli. However, these bacteria cannot survive in mosquitoes and disappears quickly from their midguts, making it unsuitable for use in the field [46]. For bacteria to be used in paratransgenesis programs in the field they must not only be adapted to the digestive tract of mosquitoes, but also be able to compete with other bacteria in the digestive tract as well as have a lifetime compatible with the adult mosquito vector so they can readily colonize the midgut [46].

There are several bacteria and fungi that can be transformed to express effector molecules for use in a paratransgenic system. These include M. anisopliae, a fungus which can colonize Ae. aegypti mosquitoes [89, 90], and be genetically modified to express scorpine, a molecule that can be used to interfere with dengue [72, 91]. Monoclonal antibodies can be used as effector molecules both with Pantoea agglomerans or Sodalis glossinidius, to form an antipathogenic system [9294]. Different combinations of anti-Plasmodium effector molecules (cecropin A, SM1, Scorpine, EPIP, scFvs and mPLA2) secreted by transgenic Pa. agglomerans inhibited the development of the human malaria parasite P. falciparum and the rodent malaria parasite P. berghei in An. gambiae and An. stephensi mosquitoes [66, 95].

Risk assessment

As with any GM organism, a number of key points must be addressed before a paratransgenesis system can be utilized in the field. Indeed, one of the most challenging aspects of risk assessment for the use of GM organism is the identification of potential problems. However, most of the harmful effects are known and include adverse effects on biological diversity, adverse consequences for gene flow and environmental changes [11].

Cost-benefit analyses are required to provide justification for new types of intervention. However, the lack of reliable data on the monetary impact of neglected tropical diseases such as dengue means that it is unclear whether the costs of developing and implementing these forms of intervention are justifiable or not. Ideally, it should be possible not only to analyze the cost-effectiveness of new strategies, but also to compare them with available alternatives and model their incorporation into integrated-vector management programs that include drugs and vaccines when these are available [11].

Although safety guidelines for field use of paratransgenic mosquitoes are strict, most of the problems associated with releasing GMM are not present in the paratransgenic approach, which is compatible with traditional control strategies and IPM programs.

The risk associated with the possibility that the modified bacteria could also infect “non-target” insect species is drastically reduced due to the fact that males will seek females from the same species. When a paratransgenesis system is designed as a population suppression strategy (Self-Limiting) there will be a selective pressure that inevitably drives the lethal gene to extinction and even if the chosen strategy is to create an etiological agent refractory mosquito (Self-sustaining), without a gene driver the transgene is bound to fade and disappear [11]. Another aspect to be considered is that there is no selective pressure interacting with the midgut bacteria as the mosquito is a dead end host [45].

Nonetheless, any GM organism release project shall undergo an environmental risk assessment to evaluate potential adverse effects on human and animal health. The European Food Safety Authority (EFSA) is a regulatory agency that regulates, identifies and appraises environmental risks as well as potential adverse effects of the GM organisms released on the environment. The regulatory process guidelines are as follows: (a) identify and characterize potential adverse effects caused by the GM organism; (b) assess potential consequences of each adverse effect; (c) evaluate the likelihood of each potential adverse effect; (d) each GM organisms characteristics should be analyzed for risk estimation; (e) plan for risk management strategies for release and marketing of GM organisms; (f) define the overall risk of the releasing of GM organisms [96].

The risk assessment should preferably result in quantitative data, however qualitative data is acceptable in specific scenarios. Assumptions made must be clarified and all circumstances discussed regarding its uncertainties associated with the identified risks. The acceptable evaluation outcome of releasing GM organisms should mandatorily imply risk levels far lower than its benefits [96].


Previous studies have found multiple paratransgenesis candidates in various mosquito species. Each type of bacteria has certain advantages and disadvantages, and the choice of which to use is governed by the particular vector-control approach being used. The advantage of using GM symbionts rather than transgenic mosquitoes is that the former is a relatively simple approach and, unlike the genetic transformation of mosquitoes, does not have the disadvantage of potentially affecting mosquito fitness. In addition, the close association between symbionts and their hosts provides a method for the transgene to spread quickly through the target population [97].

One of the most problematic issues of strategies based on GMM is that a transgenic mosquito strain is required for every sibling species. Even if an effective drive mechanism is found, the number of sibling species must be considered. For example, An. gambiae, the most important vector of malaria in Africa, has many reproductively isolated strains, greatly limiting the effectiveness of GMM [14, 98, 99]. A paratransgenic system can use the same GM bacteria for different mosquito species and even different genera, the only requirement being that the bacteria used be able to survive and colonize the mosquito host in sufficient numbers so that effector molecule expression reaches the desired level, thus overcoming the problem highlighted above and increasing the range of mosquitoes that can be controlled [14, 45, 46, 64].

Genetic transformation of mosquitoes is far more difficult and complex than paratransgenesis, in which effector molecules can be expressed and excreted by simple bacterial systems [53]. The successful transformation of P. agglomerans has substantially improved the expression of effector molecules and proteins in the mosquito midgut because of its capacity to rapidly replicate after a blood meal [66]. If the GM bacteria successfully express the effector molecule but fail to excrete it or display it on their surface, an apoptotic mechanism must be used, leading to extra fitness costs. However, if the effector molecules are excreted by the bacteria they can be produced continually, significantly increasing the effectiveness of the paratransgenic system. Fortunately, there are mechanisms such as the outer membrane protein A (OmpA) that allow bacteria to export molecules to the environment [45, 88].

Paratransgenic strategies may prove very useful for controlling mosquito species such as Culex that are, for as yet unknown reasons, inherently difficult to transform and have been genetically modified only once by the embryo microinjection technique [100, 101]. In contrast, many other mosquito species have been successfully transformed more than once (Ae. aegypti, Ae. albopictus, Aedes fluviatilis, An. gambiae and An. stephensi) [102105].

Microorganisms associated with vectors can exert pathogenic effects on the host, interfere with its reproduction and reduce its vector competence [24, 52]. Paratransgenesis may prove to be a highly valuable tool for use in IPM and is potentially of particular value in areas where there are species complexes or more than one species whose population needs to be reduced or made refractory to a given pathogen, as well as in the control of mosquito species that are not easily transformed.


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The authors would like to thank the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for providing financial support for the Entomology Laboratory at the Faculty of Public Health, University of São Paulo. ABBW is the recipient of a postdoctoral fellowship from FAPESP (2012/19117-2).

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Correspondence to André Barretto Bruno Wilke.

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ABBW conceived the paper, reviewed the literature and wrote the paper. MTM reviewed the literature and wrote the paper. Both authors read and approved the final manuscript.

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Wilke, A.B.B., Marrelli, M.T. Paratransgenesis: a promising new strategy for mosquito vector control. Parasites Vectors 8, 342 (2015).

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  • Paratransgenesis
  • Vector control
  • Bacteria
  • Transgenic mosquito
  • Neglected diseases