The COVID-19 booster is now available, and provides better protection against currently circulating variants of the illness.
The Arizona Department of Health Services reported 2,476 new cases of COVID-19 in the week ending Sept. 6, almost twice the number of infections as were reported in early July.
Variations of the virus, coupled with waning immunity, have created what one health expert describes as a "six-month pattern," where COVID-19 cases spike during the summer and winter months.
Pima County recently fired 56 employees after they chose to not get vaccinated against COVID-19, county officials said Monday.
Scientists don't know if omicron is more transmissible or dangerous than previous variants. So far, there is no indication it causes more severe disease.
The recommendation is a sharp change from holidays a year ago, when health officials warned against travel and all but the most limited family gatherings.
Arizona is one of 18 states reporting increases in resident infections, with cases increasing nearly 30% from mid-September to mid-October.
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