“There is not yet an established correlate of immunity for SARS-CoV-2 like we have for other vaccine-preventable diseases,” said Dr. Theel, director of the Infectious Diseases Serology Laboratory at the Mayo Clinic in Rochester, MN, responded to MNT about antibody testing. This in turn could result in an increased spread of SARS-CoV-2.ĭr. The FDA is concerned that antibody testing could lead to a more relaxed attitude toward taking precautions against infection with the new coronavirus. While antibody testing may seem a reasonable way to determine whether a person has developed antibodies to SARS-CoV-2, a positive test result does not necessarily indicate that a person will not develop COVID-19. However, the Food and Drug Administration (FDA) recently issued a statement saying that “antibody tests should not be used to evaluate a person’s level of immunity or protection from COVID-19 at any time, and especially after the person received a COVID-19 vaccination.” Some scientists have suggested that antibody testing could help assess whether a COVID-19 vaccine has promoted immunity to the new coronavirus. Schaffner, some medications, such as immunosuppressants and some drugs used in cancer treatments, may also negatively impact the effectiveness of COVID-19 vaccines. Under 10% of those fully vaccinated may have partial to no protection.īecause of the way in which vaccines work - by prompting the body to build up immunity against the target pathogen - individuals with compromised immune systems may not be able to build up complete or even partial immunity to SARS-CoV-2.Īccording to Prof. Schaffner.ĭata from the trials of the two-dose mRNA COVID-19 vaccines - Pfizer-BioNTech and Moderna - indicate that these are over 90% effective. “There is no direct correlation between side effects and protection,” said Prof. He stated that neither the presence nor the absence of side effects indicates immunity. In an interview with Medical News Today, William Schaffner, M.D., professor of infectious diseases at Vanderbilt University Medical Center in Nashville, TN, spoke about the relationship between side effects and immunity to SARS-CoV-2, the virus that causes COVID-19. ‘No direct correlation between side effects and protection’ Does this mean that they are not protected against SARS-CoV-2? Many people have not reported or experienced side effects after their vaccination. Fever, headache, tiredness, muscle pain, chills, and nausea are also commonly reported.Īs is the case with any vaccine, however, not everyone will react in the same way. Millions of vaccinated people have experienced side effects, including swelling, redness, and pain at the injection site. Health authorities worldwide continue to encourage those who receive a COVID-19 vaccine to report any side effects to a healthcare professional. Real-world vaccine safety monitoring continues for all vaccines, as the Centers for Disease Control and Prevention (CDC) state. Worldwide, over 13% of the population have been fully vaccinated against COVID-19, according to the data compiled by Google. In the United States, more than 162,100,000 people are now fully vaccinated. In the United Kingdom, over 36,500,000 people have been fully vaccinated against COVID-19 to date. There are currently 21 COVID-19 vaccines authorized for use across the globe.
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