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Table 1 Number of householders declaring adverse effects two weeks and one month after spraying according to the treatment arm

From: Small-scale field testing of alpha-cypermethrin water-dispersible granules in comparison with the recommended wettable powder formulation for indoor residual spraying against malaria vectors in Benin

Time of survey Treatment No. of householders surveyed Number of householders declaring adverse effectsa
Skin itching Nose running Sneezing Eye watering Headache Nausea, vomiting, stomach pain At least one adverse effect
After 2 weeks WG20 10 1 1 1 1 1 0 2
WG30 10 0 1 2 0 0 0 2
WP20 10 1 1 0 0 0 0 1
WP30 10 0 0 0 0 1 1 1
control 10 0 0 0 0 0 0 0
After 1 month WG20 10 0 0 0 0 0 0 0
WG30 10 0 1 1 0 1 0 1
WP20 10 0 0 0 0 0 0 0
WP30 10 0 0 1 0 0 0 1
control 10 0 0 0 0 0 0 0
  1. aOnly adverse effects that were declared by at least one householder are listed. Facial burning, eye irritation, excessive sweating, experiencing bad smell after spraying, blurred vision, slurred speech, muscle twitching or other symptoms were not cited by any of the surveyed householders