As the virus continues to spread, sometimes new variants emerge. Sometimes they disappear and other times they persist.
Here are some facts on the most prominent ones right now:
"SARS-CoV-2 is the virus that causes a respiratory disease called coronavirus disease 19 (COVID-19)."
"The Delta variant causes more infections and spreads faster than the original SARS-CoV-2 strain."
"The Omicron variant likely will spread more easily than the original SARS-CoV-2 virus."
"The COVID-19 vaccines are effective at preventing infection, serious illness, and death."
"Vaccine breakthrough infection = the infection of a fully vaccinated person."