At least 125,000 fully vaccinated Americans tested positive for Covid
. Even among those very rare breakthrough cases, we have seen very few illnesses serious enough to require hospitalization."
In Oklahoma, where cases are up by 67 percent, state officials broke down the data to show that for residents who got Johnson & Johnson vaccine the incidents of breakthrough were greater at 160 per 100,000 people compared to 93 per 100,000 for Moderna.NBC News contacted health agencies in 50 states and the District of Columbia to collect information in the absence of comprehensive data from the Centers for Disease Control on breakthrough cases.
Dr. Marcus Plescia, medical director for the Association of State and Territorial Health Officials, says federal and state officials are still trying to understand the breakthrough rate especially when people who take at-home tests are under no obligation to report the results to health departments. And he says while there are concerns that the percentage of breakthrough cases may be higher in the elderly and immuno-compromised than was once thought, the vaccines are still effective.
Even among states that track cases closely, officials cautioned data is likely incomplete. Vaccinated people who are infected but asymptomatic are probably largely missing from statistics.
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