The COVID-19 vaccine is the brightest light of hope but with it comes uncertainty.
Scientists aren t positive how long the antibodies from the current vaccines will protect against the virus.
It s possible people will need an annual shot.
There s also uncertainty in how SARS-CoV-2 will mutate. There are millions of people currently infected so this gives the virus incredible opportunity to create new variants, which it s constantly doing all the time, said Dallas County Medical Society s Dr. John Carlo.
Scientists believe the new mRNA technology used to create two of the three COVID-19 vaccines will allow them to easily tweak the vaccines to fight of emerging variants.
They tell you that you could feel side effects like body soreness or a problem where the injection was, said McLure.
He doesn t know whether he got the vaccine or the placebo, but says he didn t experience any side effects during his participation in the Moderna two-dose vaccine trial.
His experience and that of the tens of thousands of people in the Moderna and Pfizer vaccine trials are what experts are using to answer today s most frequently asked questions.
The few short term side effects reported included fatigue, headache and flu-like symptoms within few hours to the first few weeks.