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F0 dropped sharply, vaccination rate is high, Hanoi has achieved herd immunity?

According to Assoc. Prof. Dr. Tran Dac Phu, former Director of the Department of Preventive Medicine (Ministry of Health), Senior Advisor of the Center for Emergency Response to Public Health Events of Vietnam, with the current situation of Vietnam and it is difficult for the world to confirm whether Hanoi has achieved herd immunity or not. A very high vaccination rate does not mean herd immunity is achieved, and not having to be vaccinated is not infectious.

On the other hand, some people even COVID-19 but there is still the possibility of re-infection many times. While in order to achieve herd immunity to an epidemic, a person, once infected, is not re-infected for a short time.

From the above fact, Mr. Phu said, it is difficult to say that Hanoi or any other place has achieved herd immunity. The risk of disease outbreak is always present if people are subjective. Therefore, even though Vietnam has switched to risk control and safe adaptation to the epidemic, we must not slack off, still have to implement epidemic prevention measures and comply with the 5K compliance of the health sector.

F0 drops sharply, vaccination rate is high, Hanoi has achieved herd immunity?  - first

Experts said that with the current situation of COVID-19 epidemic, it is difficult to say whether Hanoi has achieved herd immunity or not. (Photo: Dangcongsan.vn)

Dr. Tran Van Phuc, Saint Paul Hospital (Hanoi agrees with the above opinion. Vietnam and the world still record the Omicron strain with different sub-variants, making people infected with COVID-19 can still be infected. again many times. “It’s impossible to talk about herd immunity when people can still be re-infected with the disease in such a short time,” he said. BS Phuc confirmed.

According to Assoc. Prof. Dr. Nguyen Huy Nga, former Director of the Department of Preventive Medicine (Ministry of Health), Hanoi’s ability to achieve herd immunity against COVID-19 is currently very difficult to achieve. In fact, in order to achieve herd immunity to a disease, no more people with that disease should be recorded.

COVID-19 is different from other diseases in that, some diseases can flare up and then no new cases appear, but COVID-19 can still be re-infected many times. In addition, the disease is considered to have achieved herd immunity when the vaccine against that disease has achieved long-term effectiveness. While the types COVID-19 vaccine usually only valid for a few months, not sustainable.

This expert said that, instead of referring to herd immunity, Vietnam could study the treatment of COVID-19 as an annual circulating disease.

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According to experts, people should not be negligent, subjective, absolutely adhere to 5K and actively inject vaccines when scheduled to effectively prevent epidemics.

Contrary to the above views, Dr. Truong Huu Khanh, former head of the Department of Infection – Neurology, Children’s Hospital 1, Ho Chi Minh City, said that Hanoi has now achieved herd immunity to COVID-19.

“Achieving herd immunity does not mean that no one has COVID-19. Achieving safe herd immunity means that people are still infected, but the rate is low, along with severe cases, and deaths are also reduced. According to calculations, 1 in 5 people in Hanoi has COVID-19 and this is only a statistical number, but the reality can be many times higher, even some people do not declare or do not know they are infected. This rate combined with very high vaccine coverage shows that Hanoi has achieved herd immunity to COVID-19.” BS Khanh said.

According to statistics of the Ministry of Health, since the beginning of the epidemic, Vietnam has 10,169,929 infections, ranking 12th out of 227 countries and territories, while with the ratio of infections to 1 million people, Vietnam ranks 110/227 countries and territories (with an average of 102,850 infections for every 1 million people). Particularly for the fourth outbreak (from April 27), Vietnam added 10,162,185 COVID-19 cases, of which 8,494,715 patients were declared cured.

Many experts predict that, with what is happening, if there are no more mutations, the epidemic situation in Vietnam and the world will improve much, gradually returning to the new normal, that is, accepting the pandemic. There is still an epidemic in the community, but it does not cause much danger in society.

Hanoi’s population size according to the 2019 Population and Housing Census is more than 8 million people. Every year, the capital increases by more than 160,000 people. Thus, up to now, with more than 1.46 million cases of COVID-19 recorded and reported, the rate of COVID-19 infection among the total population in the capital is about 18%, ie 1 in 5 people is infected. sick.

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