Health officials in Mobile County have confirmed the first mosquito-borne virus detections of the year after two sentinel chickens kept near Theodore tested positive for Eastern Equine Encephalitis, according to the Mobile County Health Department.
The department’s Vector Control division keeps small flocks of chickens at strategic points around the county specifically to catch early warning signs of dangerous viruses circulating in the local mosquito population. Because chickens are frequently bitten by mosquitoes but rarely show symptoms themselves, their blood can reveal exposure to viruses well before human or animal cases appear. Traps placed throughout Mobile County are regularly tested for Eastern Equine Encephalitis, West Nile Virus, and St. Louis Encephalitis, giving officials a rolling picture of mosquito-borne disease risk through the warm months.
According to the health department, these mosquito-borne viruses circulate primarily between birds and mosquitoes. A mosquito that feeds on an infected bird can pick up the virus and later pass it to another animal or person during a subsequent bite. Horses and humans can both become seriously ill if infected, but neither species can pass the virus on to another host — meaning a sick person or horse poses no direct transmission risk to family members, coworkers, or other livestock.
Of the viruses being monitored, Eastern Equine Encephalitis is considered one of the more serious threats to people and other mammals. Vaccines exist to protect horses against both Eastern Equine Encephalitis and West Nile Virus, but no vaccine is currently available to protect humans from EEE, making mosquito avoidance the primary defense for residents.
The detection comes as the health department has already stepped up mosquito spraying efforts across the county in recent weeks, a response to the wet-season conditions that tend to boost local mosquito populations. Residents in the Theodore area and elsewhere in Mobile County are encouraged to reduce standing water around homes, use repellent during outdoor activity, and report unusually large mosquito populations to the county’s vector control program.
Officials say monitoring will continue at trap sites throughout the county for the remainder of the mosquito season, with additional positive results expected to be announced as testing continues. Residents who notice symptoms such as high fever, severe headache, or disorientation after mosquito exposure are urged to seek medical attention promptly, since early treatment improves outcomes for mosquito-borne encephalitis infections.