WASHINGTON — Americans can order more free COVID-19 tests online for home delivery. The U.S. government is offering to send another round of four at-home virus tests ahead of the typical surge in ...

Chronic hepatitis D virus (HDV) coinfection in people with chronic hepatitis B is associated with rapid progression to liver cirrhosis and high mortality. In 2020, the estimated global HDV burden ...

Chronic hepatitis D coinfection affects an estimated 12 million people globally, with higher prevalence in low-income and middle-income countries, especially the African and Western Pacific regions.

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