In Colombia, 32’463,196 doses have been applied with a cut-off as of August 19, 2021.
Photo:
Jaiver Nieto Álvarez / ETCE
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It is reinforcement it is already a reality in countries such as the Dominican Republic, Israel, France, Uruguay and Russia.
On USAFor example, it was confirmed that the third dose application process will start on September 20.
“Available data clearly show that protection against Sars-CoV-2 infection begins to decline over time after the first doses of the vaccine,” according to a joint statement from senior officials, including the director of the Centers. of Disease Prevention and Control (CDC), Rochelle Walensky, and Janet Woodcock, acting director of the United States Drug Administration (FDA).
The World Health Organization (WHO) had requested, at the beginning of August, a global moratorium to a third dose despite the rapid advance of infections by the delta vaccine. This request had been made in order that there would be enough vaccines to immunize at least 10% of the population of each country and thus protect those who are at greater risk of developing a serious disease and dying.
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“We understand the concern of governments to protect their populations from the delta variant, but we cannot accept that countries that have already used the majority of vaccine supplies, use even more, while the world’s most vulnerable populations remain without. protection “, said at the time the director general of the WHO, Tedros Adhanom Ghebreyesus.
The organization has also repeatedly mentioned that to make this type of decision it is important to take into account the consistent data on whether this reinforcement is really necessary. “If we do not have this very clear, we can enter a cycle in which we will always be unsure about what we have to do,” stressed the head of the WHO Immunization Department, Kate O’Brien.
The debate over the third dose
With the advance of the delta variable, the discussion about how necessary a third dose would be to reinforce the schedules of those who were already fully immunized against it began to increase. covid-19.
In a analysis published by this newspaper it had been mentioned that while Chile, Germany and Israel have announced plans to apply these reinforcements, and the United Arab Emirates, China and Russia are already administering them, other countries insist that their priority – amid the shortage of biologicals – is to ensure that a proportion of the population can access at least at two o’clock dose to reach the minimum levels that allow a herd immunity.
(It may be of your interest: Coronavirus mutations: what will its evolution be like?)
We cannot accept that countries that have already used the majority of vaccine supplies use even more.
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Despite this, the few essays who have tried booster doses infer that the third doses of vaccines developed by Modern, Pfizer, AstraZeneca and Sinovac levels of “neutralizing” antibodies increase when given several months after the second dose. However, researchers such as Luis Fernando Alarcón, from the National Institute of Public Health of Mexico, assure that this is very fragile evidence to support the general application of a third dose and that everything indicates that they are not necessary for the most people.
(To continue reading: People over 20 can get vaccinated without an appointment in Colombia)
Carlos Francisco Fernández, ELTIEMPO.COM and CityTv
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