A coating derived from tea tree and cinnamon oils quickly kills bacteria and viruses like SARS-CoV-2, E. coli, and MRSA and keeps killing them for months.

Developed by the Singapore-MIT Alliance for Research and Technology, the assay can provide new details about the type of SARS-CoV-2 circulating in a community.

News reports about polio's return worry parents. An expert explains the two types of poliovirus and the importance of herd immunity.

The monkeypox virus can easily spread between humans and animals. A veterinary virologist explains how the virus could go from people to wild animals in the US – and why that could be a problem.

Coinfections with bacteria can make viral infections even deadlier. Researchers have identified a protein in immune cells that may play a role in fighting both types of pathogens.

Plant care advice abounds on TikTok, Twitter, Instagram and YouTube – but not all of it is good. A plant expert debunks four common recommendations.

Despite knowing the risks of COVID-19, breakthrough infections, and long COVID, US adults are less and less likely to take precautions, a survey finds.

It’s not just mosquitos. Flooding, extreme heat and other climate-related hazards are bringing people into contact with pathogens more often, and affecting people’s ability to fight off disease.

Children's noses are better at inhibiting SARS-CoV-2 infections than adult noses. But it's a different story when the Omicron variant is involved.

A new COVID-19 test detects and identifies specific SARS-CoV-2 variants with 100% accuracy, researchers say.