- Infection occurring even after both doses of vaccine
- Current vaccine not effective against Omicron: Study
Vaccine Effectiveness Against Omicron: There has been a sudden increase in the cases of corona across the world. The new variant of the virus, Omicron, is being said to be the biggest reason for the new wave.
First of all, in November last year, a new variant B.1.1529 of Corona was found in South Africa. It has been named ‘Omicron’. So far it has reached almost all the countries of the world. Due to Omicron, a record number of cases were being reported in the US, UK and European countries. Now the effect of this variant has started showing in India as well. Within a day in India, the number of corona cases has reached close to two lakhs.
This situation is happening all over the world including India when rapid corona vaccination is also going on. In countries like America and Britain, more population has been vaccinated. In India itself, more than 90 percent of the population above 18 has received a single dose of the vaccine. Now among those who are getting infected, there are many who have received both doses of the vaccine. In such a situation, the question arises that the vaccine that is available now does not have an effect on Omicron?
Replying to the Rajya Sabha in December last year regarding the effect of the vaccine, Health Minister Mansukh Mandaviya had said that ‘there is no evidence to prove that the current vaccine does not affect Omicron.’
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How effective is the current vaccine on Omicron?
Some studies have revealed that the current vaccine is not effective against the Omicron variant. One study suggests that the Omicron variant has an 88 percent chance of surviving the current vaccine.
The US Centers for Disease Control (CDC) says that the current vaccine protects against serious disease and death caused by Omicron. However, Omicron has been associated with an increased risk of breakthrough infections (getting infected even after being vaccinated).
Recently, a study was done by the UK Health Security Agency. It was told that two doses of the current vaccine are not effective on Omicron. The current vaccine is less effective on Omicron than Delta.
Similarly, a study by the German Center for Infection Research also revealed that people who had taken vaccines from Pfizer/BioNtech, Moderna and Oxford/AstraZeneca had fewer antibodies against Omicron.
Research by the Africa Health Research Institute in South Africa revealed that even after both doses of Pfizer, there was a 41-fold decrease in antibodies against Omicron.
So what’s the way now?
Many scientists have already been talking about updating the vaccine regarding the corona epidemic. Now, after the things that are coming out in the study about the effectiveness of the vaccine from around the world regarding Omicron, preparations are also going on to update the vaccine.
American company Novavax had told that it is working on a new vaccine against Omicron. The company said that it is making a spike protein that will increase immunity against the new variant.
Apart from this, German companies BioNTech and Johnson & Johnson also recently said that they are testing the effectiveness of their vaccine on Omicron. Many companies say that the vaccine will be updated by March 2022.
– Pfizer says that his company will prepare a vaccine against Omicron in 100 days. Moderna’s Chief Medical Office Dr. Paul Burton had said that it would take 3 months to make a vaccine against Omicron.
read this also– Omicron symptoms: This symptom of Omicron comes first, the same sign is visible in people who have got the vaccine
Can boosters be avoided?
– Omicron has also sparked a debate around the world about Booster Dose. The third dose is being administered to people in America, Britain and now in India too. Experts believe that immunity from the vaccine decreases after a few months, so a booster dose is necessary.
Scientists believe that the vaccine can protect you from getting seriously ill but cannot protect you from corona. Therefore, now the third and fourth doses of the vaccine are also being talked about. Israel has also started the fourth dose for the citizens of its country.
A study has been published in the Harvard Gazette. People who had taken doses of Pfizer, Moderna and Johnson & Johnson vaccines were included in this study. The study revealed that those who had received a booster dose had better immunity against Omicron.
The UK Health Security Agency (UKHSA) says that after 25 weeks of taking two doses of the vaccine, there is only 10% immunity against Omicron. Susannah Dunacchi, Professor of Infectious Diseases at Oxford University, says that three doses will be needed against Omicron.
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