John Hickenlooper, along with three other U.S. Senators, announced Thursday, Aug. 20 that he tested positive for a breakthrough case of COVID-19. All three senators are vaccinated.

Hickenlooper said he feels thankful that the vaccine has limited the symptoms of the virus and is going to isolate per his doctor's instructions.

The CDC has reported that breakthrough cases of the virus are and should be expected. They have acknowledged that no vaccine is 100% effective and other precautions should be taken in addition to getting vaccinated.

As of August 9, 2021, the CDC reported 7,608 hospitalizations due to breakthrough cases of COVID-19 and 1,587 deaths due to breakthrough cases as well.

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.