The effect of the COVID-19 vaccine may not last forever

While the studies on the Pfizer and Moderna COVID-19 vaccines have been through and created a robust immune response in patients, Infectious Disease Specialist Dr. Sumon Chakrabarti says there are things we don’t know. Because the vaccine is so new, officials are still studying how long the COVID-19 vaccine immunization could last. The duration is expected to be a year or longer, but many people are wondering if it will be similar to the flu shot that requires a dosage every year, or every few years.