Viruses easily spread between humans through coughs, needles, and sex. Animals can also infect humans through infected feces, blood, and tissue.

Karen Kruse Thomas is the Bloomberg School historian. This article originally appeared online as part of the Bloomberg School of Public Health's COVID-19 Expert Insights. Seven months after the first ...

Please provide your email address to receive an email when new articles are posted on . WHO updated its definition of what constitutes an airborne pathogen. Under the new definition, pathogens ...

In the chaotic first few months of the Covid-19 pandemic, stores faced shortages of all kinds — toilet paper, canned food, and especially, cleaning supplies. With everyone scrubbing their groceries, ...

The scientific debate over evidence that the coronavirus can float in the air for extended periods of time is intensifying. The World Health Organization has repeatedly downplayed the importance of ...

A recent letter signed by 239 researchers claims that the novel coronavirus causing COVID-19 can spread through airborne microdroplets. Whether that matters is up for debate. When you purchase through ...

The word "leprosy" conjures images of biblical plagues, but the disease is still with us today. Caused by infectious bacteria, some 200,000 new cases are reported each year, according to the World ...

Motivated by grave missteps in the pandemic, the WHO convened about 50 experts in virology, epidemiology, aerosol science, and bioengineering, among other specialties, who spent 2 years poring through ...

Monkeypox virus is a completely different virus than the viruses that cause COVID-19 or measles. It is not known to linger in the air and is not transmitted during short periods of shared airspace.