Health
Antibodies from Covid infections that last for at least 9 months, studies discover
/https://specials-images.forbesimg.com/imageserve/60f5a39e10642440db6f1489/0x0.jpg?cropX1=0&cropX2=1460&cropY1=0&cropY2=821 "Antibodies from Covid infections that last for at least 9 months, studies discover")
Top line
A new study of almost the entire population of Italian towns found that almost everyone who recovered from Covid-19 had detectable levels of antibody after 9 months, and previous infections against coronavirus. It supports previous studies suggesting that it provides some protection.
According to one study, the antibody was detectable 9 months after infection.
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Important facts
Researchers at the University of Padua and Imperial College London in Italy tested the Covid-19 antibody in more than 85% of the 3,000 residents of Vo, Italy, over a nine-month period.
researcher, writing To Nature CommunicationsFound that 98.8% of people infected in the first wave (around February / March 2020) showed detectable levels of antibodies even after 9 months of testing in November.
The study found that there was no difference between people who had symptomatic and asymptomatic illnesses.
First author Dr. Ilaria Dorigatti Said This suggests that “the strength of the immune response does not depend on the symptoms or the severity of the infection.”
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For some people, antibody levels actually increase during the test, indicating a boost to the immune system due to another infection by the virus.
Researchers say that the possibility of further infection may mean that people with antibodies, whether infected or vaccinated, can infect the virus even if they are protected from the disease. Warned.
Main background
Vo was Italy’s first pandemic death site and one of the first towns in Italy to be placed under strict blockade during the outbreak of Covid-19.Breaking away from World Health Organization guidelines, Professor Andrea Crisanti of Padua push Almost all residents are tested for the virus, regardless of their symptoms. About 95% agreed, and in the months that followed, many residents performed numerous tests. The rate at which antibody levels decline after infection depends on the tests used by the team, highlighting the difficulty of accurately comparing infection rates worldwide.
What we don’t know
Understanding how long immunity to Covid-19 lasts is very important for public health authorities seeking to control a pandemic. Antibodies provide an immune response, but they do not provide a complete picture of the immune system and cannot tell us how powerful the immune system is.Some evidence suggest Immunity from infection may be long lasting, it may not be strong Sufficient Usually to protect yourself from illness weak Than what is provided by vaccination.
Amazing facts
Researchers have also found that a small number of infections are the cause of most of the infections. Suggestion “Behavioral factors are the key to epidemic control, and physical distance not only limits the number of contacts and wearing masks, but also to reduce the risk of transmitting the disease, even in highly vaccinated populations. It remains important. ”Without case isolation and a short blockade, manual contact tracing would not have been sufficient to“ control the epidemic, ”the researchers said.
Big number
27.1 million.How many people was it completely According to government data, it is vaccinated in Italy. This is more than half of the target population over the age of 12.
See more
Photographer Matteode Mayda photograph Vo, who broke out of the blockade in April, has recorded a recovery on Buzzfeed News.
References
There is a wealth of evidence that co-immunity among previously infected people may be long-lasting. (Forbes)
Infection from SARS-CoV-2 antibody dynamics and community-wide serological testing in the Italian Vo’municipalities (Nature Communications)
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Sources 2/ https://www.forbes.com/sites/roberthart/2021/07/19/antibodies-from-covid-infection-last-at-least-nine-months-study-finds/ The mention sources can contact us to remove/changing this article |
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