Home » Health » Pfizer vaccine can delay a second dose because the first dose is highly effective.

Pfizer vaccine can delay a second dose because the first dose is highly effective.


The medical journal states Pfizer’s first dose of vaccine is effective against COVID-19. This is enough to allow doctors to delay a second dose of vaccination by more than 21 days. The company also reports a new set of data confirming the effectiveness of the vaccine is stable, even in conventional refrigerators.

New England Journal of Medicine, the medical journal. Report on Pfizer vaccine According to studies of two researchers from Canada, the government can Delay vaccination, second dose Of Pfizer, Inc. and Biontec to provide first dose of vaccination to all important groups. This is because Pfizer’s first dose of vaccine was extremely effective against COVID-19.

The report states that Pfizer’s first dose of vaccine was 92.6% effective in preventing COVID-19. While the company’s first dose of vaccine Moderna has an efficiency of 92.1%.

The second Pfizer vaccine was 21 days away from the first dose, however, researchers caution that uncertainty remains about the length of time the first vaccine can provide protection against COVID-19. Given that getting the second dose one month away from the first dose rarely improves short-term immunity.

British officials state that The results of the study support the government’s decision to take a 12-week spacing for Pfizer’s first and second vaccines to the public.

Meanwhile, yesterday (19 Feb) Pfizer and Bion Tech. Also stated that Both companies have released new data to US health authorities. Which indicates that the vaccine against the COVID-19 virus Which the two companies developed together Remain stable at the temperature of the frozen container used to store the drug Or general refrigerator

Pfizer previously reported that Pfizer vaccines had to be stored in temperatures of -80 C to -60 C, where it would be stored for 6 months, while transit temperatures had to be -90 C to -60 C. This will last 30 days, where Pfizer vaccines need to be stored at very low temperatures. Has created problems for vaccine transportation Especially in developing countries This is different from third-party vaccines that can be stored at a higher temperature than Pfizer vaccines or can be stored in a regular refrigerator.

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