Normally land-bound pathogens that cause deadly diseases for both humans and animals can cling to microplastics and end up in your seafood.

Subvariant is rising in the region, but no sign of dramatic surge in cases that other nations have experienced.

As Omicron rapidly recedes, some countries are seeing a new version of the variant, dubbed BA.2

With Omicron on the decline in some states, pandemic experts permit themselves hope, at least for the near term.

Experts say fast-spreading, less severe profile of Omicron is emerging as cases drop in South Africa but warn of challenging weeks ahead.

Early findings on immune escape and transmissibility, combined with danger posed by Delta, heighten urgency of vaccination, testing, other safety measures.

After a nose swab tests positive for a virus or bacteria, scientists can use the sample’s genetic sequence to figure out where and when the pathogen emerged and how fast it’s changing.

Harvard specialists say COVID-19 pills may cut hospitalizations and deaths and offer big boost to nations struggling with low vaccination rates.

Understanding that pandemics like COVID-19 and the Spanish flu aren't so rare should raise priority efforts to prevent and control them, says William Pan.

The microbiologist who directs the National Emerging Infectious Diseases Laboratories at Boston University explains all the biosafety precautions in place that help him feel safer in the lab than out.