Prevalence of heartworm in dogs and cats of Madrid, Spain

Parasites & Vectors

Table 1 Dogs (n) and cats (n) studied by age ranges, as well as prevalence of heartworm (%) by each group of age

Age range	Dogs (n)	Canine prevalence (%)^a	Cats (n)	Feline seroprevalence (%)^b
< 1 year	45	2.2	15	6.7
1–3 years	320	3.7	78	1.3
3–6 years	393	3.6	213	8.0
6–9 years	429	3.3	88	11.4
9–12 years	396	2.0	74	5.4
> 12 years	133	2.3	63	9.5

^aBased on detection of circulating D. immitis antigens
^bBased on serological techniques for anti-D. immitis and anti-Wolbachia antibody detection (considered seropositive when anti-D. immitis and anti-Wolbachia surface proteins antibodies presented jointly)

ISSN: 1756-3305