There had been some early research suggesting the delta coronavirus variant produced as much as 1,000 times as much virus as other variants. The study, published Wednesday in the New England Journal of Medicine, also found that different coronavirus strains produce about the same amount of the virus, which hadn’t been clear before. Usually, we only see the virus once a person has symptoms, when they're at peak." "This allowed us to uncover what infections look like in the very early stages. Chan School of Public Health and co-author on the paper. "Most of them were getting tested every day or every other day," said Stephen Kissler, an infectious disease fellow at the Harvard T.H. ![]() The researchers took 19,941 viral samples from 173 National Basketball Association players, staff and their families between November 2020 and August. They compared the viral dynamics of those infected with various coronavirus variants and the course of illness in players who were vaccinated and unvaccinated. The study, which involved NBA players, their families and staff, found that people with breakthrough COVID-19 cases stopped producing the virus two days sooner than the unvaccinated. The vaccinated people who got COVID-19 cleared the virus from their systems on average in 5½ days. New research about breakthrough coronavirus infections finds they may be less likely to spread to others because vaccinated people don't shed the virus for as long as the unvaccinated. The agency works every day to use the best available science and data to quickly and transparently inform the American public about threats to health.Watch Video: Moderna: Vaccine protection waned amid delta surge This outbreak investigation is one of many CDC has been involved in across the country and data from those investigations will be rapidly shared with the public when available. I would also like to humbly thank the residents of Barnstable County who leaned in to assist with the investigation through their swift participation in interviews by contact tracers, willingness to provide samples for testing, and adherence to safety protocols following notification of exposure. I am grateful to the commonwealth for their collaboration and rigorous investigation. This outbreak investigation and the published report were a collaboration between the Commonwealth of Massachusetts Department of Public Health and CDC. The masking recommendation was updated to ensure the vaccinated public would not unknowingly transmit virus to others, including their unvaccinated or immunocompromised loved ones. This finding is concerning and was a pivotal discovery leading to CDC’s updated mask recommendation. High viral loads suggest an increased risk of transmission and raised concern that, unlike with other variants, vaccinated people infected with Delta can transmit the virus. Today, some of those data were published in CDC’s Morbidity and Mortality Weekly Report (MMWR), demonstrating that Delta infection resulted in similarly high SARS-CoV-2 viral loads in vaccinated and unvaccinated people. This decision was made with the data and science available to CDC at the time, including a valuable public health partnership resulting in rapid receipt and review of unpublished data. ![]() ![]() On July 27th, CDC updated its guidance for fully vaccinated people, recommending that everyone wear a mask in indoor public settings in areas of substantial and high transmission, regardless of vaccination status.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |