What about safety and side effects?
Serious side effects, allergic reactions or adverse incidents stemming from the vaccines are rare, though in clinical trials, mild to moderate side effects were common.
The most common complaints were pain at the injection site, fatigue and aching muscles and joints.
People with a history of anaphylaxis or severe allergic reactions should inform health professionals before they are vaccinated, and anyone with an allergy to one of the vaccine's ingredients should consult a healthcare provider before getting vaccinated.
The Food and Drug Administration and the Centers for Disease Control and Prevention are recommending the U.S. pause on using the Johnson & Johnson COVID-19 vaccine after reports of blood clots in six of 6.8 million individuals who received the vaccine so far.
All six recipients were women between the ages of 18 and 48, with symptoms occurring 6 to 13 days after vaccination, according to the statement. One woman died and one has been hospitalized in critical condition.
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The health agencies released a statement on April 13 recommending the pause “out of an abundance of caution,” saying blood clots still seem to be “extremely rare.” So far, the CDC and FDA are reviewing six reported cases in the U.S.
The type of blood clot reported in individuals who have received the J&J vaccine is called cerebral venous sinus thrombosis (CVST).
As of April 12, more than 6.8 million doses of the Johnson & Johnson vaccine have been administered in the U.S. and approximately 9 million more has been shipped out to states, according to the CDC.
The University of Oxford previously reported pausing administration of the vaccine it developed with AstraZeneca in a U.K. study to test the shot in children pending review of rare blood-clotting issues seen in adults after receiving the shot.
Do some vaccines work better than others?
Read more - Comparing the COVID-19 vaccines
