CDC warns cases of highly contagious parvovirus B19 are on the rise. What is it?

Parvovirus B19, a highly contagious virus, is seeing a resurgence after a decline during COVID-19 due to increased precautions. While it generally causes mild symptoms in children and healthy adults, it poses significant risks for pregnant individuals and those with weakened immune systems.

Who is at risk of serious complications from parvovirus B19?

How does parvovirus B19 affect pregnant individuals compared to healthy adults?