WASHINGTON (AP) — Two weeks after celebrating America’s near “independence” from the coronavirus, President Joe Biden is confronting the worrying reality of rising cases and deaths.

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He's also facing the limitations of his influence to combat the persistent vaccine hesitance responsible for the summer backslide.

Cases of COVID-19 have tripled over the past three weeks, and hospitalizations and deaths are rising among unvaccinated people.

While the rates are still sharply down from their January highs, officials are concerned by the reversing trendlines and the resulting needless illness and death.

And cases are expected to continue to rise in the coming weeks.

LOOK: Answers to 30 common COVID-19 vaccine questions

While much is still unknown about the coronavirus and the future, what is known is that the currently available vaccines have gone through all three trial phases and are safe and effective. It will be necessary for as many Americans as possible to be vaccinated in order to finally return to some level of pre-pandemic normalcy, and hopefully these 30 answers provided here will help readers get vaccinated as soon they are able.