Drug shortages, though not uncommon, have hit nine-year highs in the U.S.
The emergency designation has given millions of Americans special access to Medicaid.
National health organizations have lobbied for the public health emergency to be extended.
Heart inflammation has been reported in a small percentage of people who have received the RNA vaccines.
The pandemic caused more than 377,000 deaths, and only heart disease and cancer were more deadly.
Health experts say the J&J vaccine shouldn't be considered inferior to those from Prizer and Moderna.
J&J plans to file for an emergency-use authorization in the U.S. next week.
One official says every American could be able to get a shot by the end of March.
The price ceiling on Pfizer’s product will impact what other companies can charge to protect people from Covid-19.
Though the pandemic continues, companies believe they're much better equipped to fight it now.
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