A review of hundreds of cases finds that only a minority of patients noted being sick with a coronavirus infection prior to developing the severe inflammatory condition.

Martha Nelson of the National Institute of Allergy and Infectious Diseases talks about the need to balance data sharing and patient privacy concerns when tracking the spread of variants.

A review article containing contested claims about the tropical medicine drug as a COVID-19 treatment was listed as “provisionally accepted” on the journal’s website before being removed this week.

Death rates among blood cancer patients who contract COVID-19 are higher than for those with other cancers, pointing to impaired immunity that makes it hard to overcome the virus.

The woman may have had a link to another person, who was married to an Ebola survivor and who died a few days previously in Democratic Republic of Congo.

A study of people in Sierra Leone suggests that the virus can lie in hiding from the immune system before re-emerging later and sparking a new response—although researchers didn’t examine whether this could make people infectious again.

Scientists across the world are closely tracking the spread of mutations in the coronavirus and investigating whether they could render current vaccines less effective.

As politicians try to schedule an end to the pandemic, scientists say the virus will stick around as an endemic disease similar to the common cold.

From 2017 to 2018, cancer deaths dropped by 2.4 percent, the largest single-year improvement recorded in 70 years of American Cancer Society annual cancer reports.