Is BCG Vaccination History Linked to Less Severe COVID-19?
COVID-19 patients in Rhode Island appeared to have less serious cases if they had previously received the Bacillus Calmette-Guérin (BCG) vaccination, according to a Brown University study. Find out what patient group was studied and why the researchers think the tuberculosis vaccine might have that effect.

Postinfection Vaccination, Antivirals Don’t Lower Stroke Risk After Shingles
The risk of stroke goes up with herpes zoster (HZ) infection, but, at that point, vaccination and antivirals do not appear to help much. A CDC study looked at more than 87,000 patients who had HZ and acute ischemic stroke to reach that conclusion. Here is why the authors advise that prevention with vaccine is the best strategy.