Pfizer’s vaccine effectiveness decreases in 6 months, Israel points out

Pfizer’s vaccine effectiveness decreases in 6 months, Israel points out

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Pfizer’s vaccine effectiveness decreases in 6 months, Israel points out

Israel was one of the first countries in the world to initiate covid-19 vaccination. The first doses began to be applied in December of last year (Credit: Reproduction/Disclosure)

Israeli health officials point out that the effectiveness of Pfizer’s vaccine tends to decline six months after the immunizer is applied. As of this Monday, the 12th, the country started to apply a third dose of the covid-19 vaccine to patients at immunological risk to strengthen the body’s defenses against the virus.

“There is growing evidence that immunosuppressed patients do not develop a satisfactory level of antibodies even after two doses of the coronavirus vaccine. Some can develop these antibodies only after three doses,” the Ministry of Health said in a statement.

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Israel was one of the first countries in the world to initiate covid-19 vaccination. The first doses began to be applied in December last year, with good results. The rate of daily coronavirus infections dropped from 10,000 to less than 100 cases.

About 85% of the adult population has already been immunized with the two doses of the vaccine. The country has also started to vaccinate children and pre-adolescents under 12 years old: around 1,000 Israelis with comorbidities in this age group have already been immunized, with specific authorization from the Ministry of Health. The immunological responses were the same as observed in other age groups and, according to health authorities, no side effects were recorded.

A broad agreement with Pfizer, signed last year, allowed access to millions of doses of the vaccine and the collection of data on the effects of the vaccine. Six months after the start of the vaccination campaign in Israel, it was possible to verify the development of antibodies against covid-19 over time.

According to the Ministry of Health, the vaccine’s effectiveness in preventing coronavirus infections and symptoms has dropped to 64% since June 6th. Authorities also said the vaccine was 93% effective in preventing hospitalizations and serious illnesses caused by the capillary coronavirus.

In recent weeks, there has been an increase in infections due to the spread of the Delta variant, first detected in India. Considered the most contagious, the variant is responsible for about 90% of new cases of covid-19 in the country, according to health authorities.

Last week, the country registered about 2,800 new cases, a number considered to be still low compared to the 60,370 identified between January 10 and 16, in one of the peaks of the spread rates, but which is already starting to provoke changes in the political fight for the coronavirus.

Starting this Friday, the 16th, all travelers arriving in Israel will need to be quarantined for at least 24 hours. Visitors from countries with large numbers of covid-19 cases, such as Brazil, Chile, Bolivia and much of Latin America, will have to be isolated for ten days when arriving at the Tel Aviv airport.

If the pandemic gets worse in that part of the world, Israelis will not be able to travel to those countries starting this week. The use of mask is also mandatory again.

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