#west-nile-virus

#west-nile-virus

"We have not seen them go away altogether like they have in previous years," said Susanne Kluh, general manager for the Greater Los Angeles County Vector Control District.

The JC virus, commonly known as the John Cunningham virus, is estimated to infect up to 90 percent of people, often remaining silent throughout life.

Bats carry a lot of very deadly pathogens like Ebola virus, Nipah, Hendra, coronavirus, and also rabies virus. People are finding more and more bat-borne viruses. When such viruses are transmitted to humans, the results are often fatal so there's a lot of interest in trying to prevent spillover in the first place.

In a study published in Science Advances, researchers in China fed Aedes aegypti mosquitoes blood that contained either a vaccine against Nipah virus or the rabies virus. The viruses, contained in the vaccines, replicated inside the insects and reached their salivary glands, allowing them to pass on the vaccine when feeding on bats or when the bats ate the insects.

Hawaii is the hot spot for rat lungworm disease in the U.S., with more than 80 cases that were laboratory-confirmed from 2016 to 2026. Still, it's considered a highly underdiagnosed disease. The largest number of rat lungworm cases occur on the island of Hawaii.

Flu season is showing no signs of slowing down in California, with every region experiencing either high or very high levels of flu. In the Bay Area, the number of people testing positive for the virus has hit a new seasonal high, with 18.99% of flu tests coming back positive through Jan. 31, according to the latest numbers from the California Department of Public Health.

This is exceptionally rapid detection of an outbreak in free-ranging marine mammals, said professor Christine Johnson, director of the Institute for Pandemic Insights at UC Davis' Weill School of Veterinary Medicine. We have most likely identified the very first cases here because of coordinated teams that have been on high alert with active surveillance for this disease for some time.

Highly pathogenic avian flu, or bird flu, has been confirmed in the Emerald Necklace. Risk of human infection is currently low. As always, please do not feed, touch, or remove birds from Boston parks.

Temperature and rainfall influence where malaria-carrying mosquitoes such as Anopheles species can survive and how well malaria parasites, such as Plasmodium falciparum, develop in them. Past predictions have been inconsistent and have often focused on where malaria might spread, rather than on how severely it could intensify where it already exists.