Mphepo yamkuntho yamphamvu m'nyengo yachisanu, kutentha kwa chilimwe, ndi chimphepo chamkuntho Hilary zachititsa kuti udzudzu wa Aedes womwe umaluma masana ku California, wachititsa kuti m'madera ena ukhale woyamba kudwala kachilombo ka West Nile kwa zaka zambiri.
Tagwirizana ndi makampani ambiri, koma kampaniyi imachita makasitomala moona mtima. Ali ndi luso lamphamvu komanso zinthu zabwino kwambiri. Ndi mnzathu amene takhala tikumukhulupirira.