Why do the COVID vaccines require two doses?
Considering most COVID vaccines require two doses to prove effective, as per experts, it is due to various reasons.
While the first dose of COVID vaccine starts the process of producing antibodies and building up protection. The second dose works towards reinforcing the protection produced after the first dose.
It is believed that the second dose of vaccine substantially strengthens the immunity and increases the rate of effectiveness for the same.
Most common side effects experienced by the people post vaccination
Almost all COVID vaccines lead to side effects. While the intensity of the symptoms may vary from person to person, some of the most common side effects experienced are as fever, chills, nausea, and body ache.
Although these side effects may loom over for a day or two, doctors believe they are harmless and manageable.
As per CDC, some of the most common side effects you can experience on your arm are redness, swelling and pain. This can be accompanied by nausea, fever, chills, headache, muscle pain and more.
Side effects more intense after the second dose of COVID vaccine, as per the CDC
An array of side effects were reported by people who received their first vaccine jab. However, the Center for Disease Control and Prevention claims that the side effects experienced by people after their second dose of vaccine were more intense than what they felt after their first shot.
However, according to the CDC, “these side effects are normal signs that your body is building protection and should go away within a few days.”
Considering the adverse reactions are unmanageable and your discomfort and pain is elevating over time, CDC recommends you to call your doctor and seek medical help.
When should you receive your second dose of COVID vaccine?
The interval between the dosage of the COVID vaccines may differ on the basis of what vaccine you are receiving.
In India, Oxford-Astrazeneca produced COVID vaccine Covishield is said to be most effective if the second dose of the vaccine is administered between 6-8 weeks, but not later than the stipulated period of 8 weeks.
Other trials have suggested that the efficacy of the vaccine increases if the intervals of dosage increased to 12 weeks.
Covaxin, another COVID vaccine developed by the Indian Pharmaceutical company Bharat Biotech is also administered in two doses, given 28 days apart i.e. four weeks.