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Why is it so important to take a second dose of the Covid-19 Vaccine?

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Since everywhere the vaccination drive is going on, one question that arises is why is it necessary to take two doses of covid vaccine, and why only taking one is not enough? here's the reason why it's necessary to take both doses of the covid vaccine.
 

Content topics

  • Why is it necessary to take the second dose?

  • What is the necessity to keep the gap?

  • What if taking the second dose gets delayed

  • What if I get infected after taking the first dose?

  • Can I choose between Covishield and Covaxin?

  • Can a person who recovered from covid-19 donate plasma?

  • Statistical data of people vaccinated in India.

  • Conclusion

Here’s all you need to know about why it is necessary to take a second dose of covid vaccine.

It is necessary to take the second dose of the covid vaccine because, according to the information provided by the Ministry of Information and Broadcasting in a post shared on Twitter and by DR. Randeep Guleria director of AIIMS, the first dose of the vaccine only prepares the immune system in our body to fight against COVID-19 infection, and does not produce protective immunity.vaccination_

But the second dose triggers the immunity system to produce a large number of antibodies and gives cell-mediated immunity.

The second dose also stimulates the memory cells in the body so the body remembers the infection for a long time period and helps produce antibodies quickly in case of reinfection.

So according to the information provided by CDC Centers for Disease Control and Prevention, A person can be considered “FULLY VACCINATED” only after taking both doses of the vaccine.

Here another question that arises in our mind that is, what should be the ideal gap between the two doses of vaccine.

In India so far two vaccines are approved by the government for vaccination: COVISHIELD and COVAXIN.

COVAXIN

Covaxin is a covid-19 vaccine by the Bharat Biotech and is developed by the Indian Council of Medical Research (ICMR) in collaboration with the National Institute of Virology (NIV). The ideal gap between 2 does of COVAXIN is suggested to be 28 days. 

COVISHIELD

This vaccine was developed by the Oxford University and AstraZeneca and is produced by The Serum Institute in Pune. The gap between the two doses was recommended four to six weeks when the vaccination started in January. Which was extended to four to eight weeks in March. While the expert group also suggests increasing the time period period period to 12 to 16 weeks. although no official confirmation is provided by the center till now.

What is the necessity to keep the gap?

Now we know the ideal time period between two doses of vaccine, the other question is what is the necessity to keep this gap, and in the case of Covishield, why are the experts recommending increasing the gap between the first and second dose of the vaccine. So, according to the studies, it is seen that the COVISHIELD vaccine works better when there is a gap between the first and second dose, and its effectiveness is increased by 26% if the gap is 12 weeks or more than that. 

Now, if you are thinking that why the time gap between the second dose of COVAXIN is not increased, it is because COVAXIN is developed in a different way than COVISHIELD. So the experts suggest that the gap between two doses of COVAXIN should remain unchanged. And also, there is no proof that the effectiveness increases if the gap is increased between two doses. Because during the trial, everybody was given second doses after 28 days of the first dose. Hence no suggestion to increase the gap is seen and 2nd dose of COVAXIN is given at the gap of 28 days. 

What if taking the second dose gets delayed?

According to experts if you take the second dose a little late it is fine but you should not skip the second dose because full protection from the virus is ensured only after taking both doses.

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What if I get infected after taking the first dose?

If you are infected after taking the first dose of the vaccine then you are supposed to wait for four to eight weeks after being fully recovered from the disease to take the second dose of the vaccine.

Also, if you have already been infected with covid once before taking the vaccine you should take the first dose after four to eight weeks of recovery, according to the current protocol. 

Can I choose between COVISHIELD and COVAXIN?

yes, a person can choose the vaccination center according to the vaccine given there when scheduling the appointment. However, no choices are available at the vaccination centers by the government.

Can a person who recovered from covid donate plasma?

According to experts, not everybody recovering from Covid can donate plasma. Those who have recovered from covid can donate plasma after 30 to 40 days of testing positive. And also people between the age group of 18 to 55 can donate plasma. And people with hypertension and diabetes too can donate if all the other conditions are in control.

CONCLUSION

As per the statistical report 41,262,233 (forty-one million two hundred sixty-two thousand two hundred thirty-three) people, that is 3.0% of the total population of India are fully vaccinated. While 144,624,652 (One hundred forty-four million six hundred twenty-four thousand six hundred fifty-two) people, this is 10.7% of the total population in India, have received the first dose of the vaccine as of now.

Hence it is necessary for all of us to take both doses of any one of the covid-19 vaccines to be fully vaccinated and safe. So all of you must take both doses of the vaccine to fight against the disease.

 

 

 

 

Hasti Mehta

Hasti Mehta