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The family does not know where Alfredo Hercules contracted the virus from Positive findings from a late-stage study in kids aged 12 to 15 encouraged the trials in even younger kids, Pfizer said The new analysis also reported 100% efficacy 'against severe or critical disease and hospitalization' |
| More Health News |  | 'Until we have a much higher percentage of people vaccinated, you still have to exercise caution,' one expert said |  | None of the 27,000 patients tested positive for flu and COVID-19 at the same time |  | 'Long haulers' improve with time, but some still report symptoms over nine months later, researchers say |
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