Breakthrough COVID-19 Cases Surge in Arizona to Almost 50,000

Sick person talking to CDC employee

Although the COVID-19 vaccine has been widely available since spring, so-called “breakthrough” cases, where someone contracts the coronavirus after being vaccinated, are spiking in parts of the country including Arizona. Nearly 18 percent of new COVID-19 infections in September were among the vaccinated. The majority of them received the Pfizer vaccine, although substantial numbers of breakthrough cases happened after receiving the Moderna or Johnson & Johnson vaccine.

According to the Arizona Department of Health Services, in mid-April, there were 495 breakthrough cases in Arizona. Now, there are 49,962. Of those, 376 people have died, although their cause of death wasn’t specified. 

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