New research shows that adults infected with COVID-19 could still have antibodies in their blood nearly 500 days after infection Black Health TV.
“We now have a good estimate of how long antibodies last after COVID-19 infection,” said study author Michael Swartz, associate professor and vice chair for biostatistics at The University of Texas Health Science Center at Houston. “Our research shows that antibody levels in already infected individuals increase in the first 100 days after infection and then gradually decrease over the next 500 days and beyond.
For the new study, Swartz and his team analyzed data from more than 57,000 volunteers older than 20 years who participated in the CARES survey in Texas. It was launched in October 2020 to track COVID-19 antibody status over time.
Most of the volunteers self-reported having had COVID-19 infection before October 2020. The researchers examined blood samples from participants collected between Oct. 1, 2020, and Sept. 17, 2021.
While individual results varied by age, weight, smoking or vaping, and severity of infection, all subjects had a similar decline in antibodies, according to the report published recently in the Journal of Infectious Diseases.
Although antibodies can persist for nearly 1.5 years after COVID-19 infection, Swartz emphasized that vaccination offers the best protection against infection, reinfection and hospitalization.
“We know that rates of reinfection or hospitalization are much lower after vaccination than without vaccination, especially with other variants like we’ve seen with Delta and Omicron,” he said in a university news release. “So if you have not yet been vaccinated, now is the time to do so.”
Previous Texas CARES research has shown that children continue to have circulating antibodies for at least seven months after COVID-19 infection.
For more information on COVID-19 antibodies, visit the U.S. Centers for Disease Control and Prevention.
SOURCE: University of Texas Health Science Center at Houston, news release, May 31, 2022.
Researchers are confident that the Covid 19 antibody tests could help the United States fight the pandemic. However, the WHO has expressed doubts about the tests’ effectiveness. The antibody tests are designed to determine if someone has the coronavirus.
However, experts say the tests may not prove effective unless the person contracts the disease again. In addition to the United States testing coordinator, there have also been warnings against buying private tests.
In the United States, the government has spent more than $3.5 million on these tests but has not yet found a solution that works. Therefore, no test has been approved yet. According to Professor John Newton, people should avoid buying the private service until a working solution is approved.
He goes on to say that this work is productive and a breakthrough is imminent. The effort will soon lead to a serological test that can measure the level of antibodies present in blood plasma.
Therefore, it is not advisable to resort to unproven tests because they cannot be relied upon. The reason is that they give an inaccurate result and can put you at great risk. As soon as we find a test that works, we will make it available nationwide.
In Geneva, Dr. Maria van Kerkhove, WHO representative, expressed her doubts about the rapid serological test, saying the evidence was insufficient. She said that many countries propose rapid serological tests to determine if a person’s immunity is not strong enough.