The nation’s animal health agency said that it is investigating possible cases of equine encephalitis in the area around Ciudad Quesada.
This is another disease carried by mosquitoes. There are at least four types of the virus. Costa Rica experienced an outbreak in Guanacaste of Venezuelan encephalitis in 2009, said the Servicio Nacional de Salud Animal.
The disease can cause a range of symptoms in animals. Sometimes there is no symptom, and in other cases there is death.
The animal health agency is looking in the communities of la Abundancia, El
Campo, Cedral and la Tigra. It also warned humans to take precautions with long sleeves and long pants to avoid mosquito bites in areas where the disease may exist. Lab tests are pending.