Backyard chicken keepers across the Las Vegas Valley are facing a rough start to mosquito season as fowl pox spreads from coop to coop, sidelining entire flocks. In North Las Vegas, one owner says roughly 40 of her birds have been hit by the virus, which leaves crusty, wart-like scabs on the face and comb and can cause swollen, crusted eyes that need regular cleaning and ointment. Local vets and owners are scrambling to quarantine sick birds and keep mosquitoes as far from the coops as possible.
North Las Vegas chicken owner Linzy Stahl told FOX5 she first spotted what looked like "a teeny tiny white spot" on one hen's comb before lesions spread through her flock. After quarantine and supportive care, Stahl said most of her birds have pulled through, but one is still seriously ill. Flamingo Pet Clinic owner Dr. Bryan Kenton told FOX5 that fowl pox is usually nonfatal, but a less common "wet" form can affect the respiratory tract and comes with a higher risk of death. There is no cure, Kenton said, so treatment is all about easing symptoms while birds build immunity.
Why mosquitoes matter
Mosquitoes are a prime culprit in spreading the virus because they can bite an infected bird and then pass fowl pox to others, according to Poultry Extension. That bite-and-carry pattern means outbreaks often rise and fall with mosquito season. The Southern Nevada Health District has already reported early mosquito activity and recent West Nile positive mosquito pools, a local red flag that biting pests are on the upswing this summer.
Signs, treatment and the vaccine
The more common "dry" form of fowl pox causes raised scabs on unfeathered areas and often clears up within a few weeks. The diphtheritic "wet" form can create lesions in the mouth and throat and turn breathing into a life-threatening struggle, veterinary sources warn. There is no specific antiviral drug for fowl pox; care centers on cleaning wounds, using topical eye ointments and treating secondary infections, as outlined by PetMD. Vaccination, typically given by a wing-web or stab inoculation when birds are several weeks old, is an effective preventive step when it is done correctly, the extension literature notes (UF/IFAS).
How owners can protect their flocks
For now, backyard keepers are being urged to go back to basics: isolate sick birds, disinfect feeders and waterers, and dump any standing water near coops so mosquitoes have fewer places to breed. The Southern Nevada Health District tells residents to "Fight the Bite" by emptying containers that collect water and using EPA-registered insect repellent when outdoors.
Poultry vaccines, including combined AE and fowl pox products, are available from hatcheries and farm suppliers for backyard flocks and can be a practical option for young birds that have not yet been exposed (McMurray Hatchery). For many local owners, quarantining infected birds and staying on top of wound care are proving enough to help their flocks ride out the outbreak. Veterinarians say anyone who spots signs of the wet form, such as breathing trouble, white nodules in the mouth or heavy eye discharge, should contact an avian-experienced vet right away.
