People who have received a booster dose cannot receive the nasal vaccine – Flying Journals


Nasal vaccines offer a very interesting form of immunity, says Dr NK Arora

New Delhi:

In an exclusive interview with NDTV today, the head of India’s vaccine task force said that India’s nasal vaccine cannot be used for people who have taken preventive measures or booster doses.

The nasal vaccine iNCOVACC was launched on the CoWIN platform last week.

“It (nasal vaccine) is recommended as a first booster dose. For example, if a person has already received a prophylactic dose, it is not recommended for that person. It is for those who have not yet received a prophylactic dose,” Dr. NK from University Arora, who has been closely involved in the vaccine rollout since the beginning of the epidemic, told NDTV.

Dr Arora chairs the NTAGI Covid Task Force, short for the National Technical Advisory Group on Immunization, which works to introduce new vaccines and strengthen the universal immunization programme.

“As part of the program, no. CoWIN will not be accepting a fourth dose,” he told NDTV when asked if people who had taken the booster could get the nasal vaccine.

“Let’s say you want to take a fourth dose. There’s a concept called an ‘antigen sink.’ If a person is repeatedly inoculated with a particular type of antigen, the body stops responding, or responds poorly. That’s why the initial mRNA The vaccines were given six months apart. Later, people took them three months apart. But it didn’t help much in that case. So there’s no value in taking a fourth dose at the moment,” Dr Arora said.

Nasal vaccines offer a very interesting form of immunization, he said.

“…the entry point (for the vaccine) is the respiratory system – the nose and the mouth, where the immune system sets up a roadblock so that the virus cannot easily enter the system … This will help against not just Covid, but for all respiratory viruses and infections, this is a very useful platform to fight them,” Dr Arora said.

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The needle-free vaccine was approved by India’s Medicines Regulatory Agency in November, with restricted use in emergency situations.

Anyone over the age of 18 can get the nasal vaccine. “It’s very simple, four drops in each nostril, a total of 0.5 ml is enough. And the side effects are very small, except for a short period of nasal congestion, regardless of the data, it is very safe.” Vaccine,” he said.

“With this vaccine, like any other vaccine, we need to wait 15 to 30 minutes in case there is a reaction, which can be processed immediately, although none of the data we’ve seen has been reported,” he said.

On whether people need a booster dose after a booster dose of the nasal vaccine, Dr Arora said: “The scientific answer at this point is that there is no evidence that further vaccines are or are not needed. Even in countries where people have already received 3 doses of the vaccine It’s the same in China. , four or five doses of vaccines, especially these mRNA vaccines in North America and Europe, but they continue to infect.”



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