It's a flavivirus, which is an RNA virus — meaning it has ribonucleic acid as its genetic material — that can infect humans, birds and horses. Where does West Nile virus come from?

MP is a naturally occurring virus from Africa and due to international travel, we are seeing cases pop up in other countries where the virus is considered to be rare. MP is a zoonotic virus, meaning ...

The covid-19 virus was a new virus, meaning people had no immunity to it. This allowed it to spread widely and made it more likely to cause severe infections.

“You take the virus, grow it up, purify it and kill it with an inactivating agent. That’s a whole-killed viral vaccine,” said ...

Oropouche virus is an arthropod-borne virus, meaning a type of virus spread to people by the bite of infected arthropods, a group of insects.

With one Georgia case so far in 2025, Fulton County officials are warning residents after mosquitoes tested positive for West Nile virus in Atlanta.

COVID-19 Virus Found In 6 Backyard Animals – And Humans Are The Cause Human contact is the most likely source of SARS-CoV-2 in these common US species.

HSV-1 is a relatively large virus, meaning scientists can replace or add new genes without too much trouble.

Although most cases of West Nile virus are asymptomatic, you should still take steps to avoid it. Here's what you should know about the virus and how to protect yourself.

Although most cases of West Nile virus are asymptomatic, you should still take steps to avoid it. Here's what you should know about the virus and how to protect yourself.