The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...

A dismantled health infrastructure leaves the U.S. incredibly vulnerable, warns infectious-disease expert Michael Osterholm.

Co-infection of influenza virus and SARS-CoV-2 can lead to more severe disease than infection of either alone.

It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.

Hospital admissions for maltreatment of children under the age of 2 years declined 31% during the 16-week lockdown at the start of the COVID-19 pandemic, returning to prepandemic levels after ...