According to a study recently published in the British magazine "Nature Medicine" and focusing on more than 13 million veterans in the United States, people who are infected with COVID-19 after being vaccinated may still develop symptoms related to "long-term COVID-19" after being diagnosed. , but these risks and the risk of death are lower than those of unvaccinated infected people. This study found that there is a need to continue to optimize infection prevention strategies and develop care pathways for the long-term symptoms of COVID-19.
Long-term symptoms of COVID-19 infection have been documented, but their association with breakthrough infection (a recipient testing positive for COVID-19 more than 14 days after completion of vaccination, or BTI) remains unclear.
This time, a team from the University of Washington School of Medicine used national health data from the U.S. Department of Veterans Affairs to investigate the vaccinated population (a total of 33,940 people, defined as completing one dose of Janssen vaccine, two doses of Moderna, or two doses of Pfizer- Long-term and short-term risks associated with BTI for a full course of BioNTech vaccine) and compared with several control groups (13,335,133 people in total). The
study estimates that vaccinated people who develop BTI are at risk of death (13.36 additional deaths per 1,000 people) and long-term COVID-19-related symptoms, such as lung and cardiovascular disease (122.22 additional deaths per 1,000 people), 6 months after diagnosis. At least one symptom is present). This is compared to a group of people who have never had a positive coronavirus test recorded.
However, the researchers also found that in the first 30 days after the occurrence of BTI and subsequent diagnosis of new coronary pneumonia, compared with the unvaccinated infected people (113,474 people), the vaccinated group had 10.99 fewer deaths per 1,000 people and developed at least one symptom. There are 43.38 fewer people per 1,000 people.
They concluded that the results could be used to help improve strategies both to prevent BTI and to optimize care of infected people. (Science and Technology Daily reporter Zhang Mengran)
Source: Science and Technology Daily
