In the wake of heated debate over the unproven lab leak theory, the world is calling on China to cooperate with investigations. But efforts to delve into this matter seem to be stalling.

Researchers at the University of Georgia are using models to better prepare for and respond to future infectious disease threats. The goal includes improving communication and public policy during a public health crisis.

Interest in international air travel is rising. If you're want to fly out of or into the United States, there's a lot you need to know. Here are answers to key questions.

President Biden pledged the U.S. will donate 500 million doses of the Pfizer vaccine globally. "Our values call on us to do everything that we can to vaccinate the world against COVID-19," he said.

Health experts worry about the Delta variant because it appears more transmissible, which means it could lead to more deaths among the unvaccinated. Georgia, with roughly 35% of vaccinated adults, has more unvaccinated people than almost anywhere in the country.  

Officials have pleaded with tech giants to keep the documents off their sites, but Amazon briefly had blank vaccination cards for sale this week. They could land their bearers in prison.