The anti Covid vaccine mix still baffles some, as the security to apply different pharmaceutical doses it can represent a risk, according to various opinions; However, the ‘cocktail’ of biologics against Covid-19 it is safe in some cases, according to scientific studies, case studies, and some health regulatory agencies such as the Food and Drug Administration (FDA), the Centers for Disease Control and Prevention (CDC) or the Russian Fund for Direct Investment.
It should be noted that the combination of vaccines emerged as a measure of emergency in some countries, above all, due to the side effects presented in some of those vaccinated with the first dose. At the same time, the action began with little evidence in countries where the supply of the second components, specifically the Russian vaccine, was scarce.
So, a few months ago Germany or France, for example, determined that those who applied AstraZeneca, in most cases, under 50 or 60 years, they should receive the vaccine of Pfizer or Modern as a second component to avoid risks of thrombosis.
In this sense, the crisis that occurred with the second doses of the vaccine Sputnik V, a particular case of Argentina, led its Ministry of Health to, first, begin research and, later, apply vaccines such as AstraZeneca or Moderna, despite the fact that some combinations do not coincide with the technologies of each biological.
Recently, a study carried out in Argentina, in conjunction with the Russian Fund for Direct Investment, determined that an additional dose of Sputnik Light to vaccinated with CanSino, AstraZeneca, Moderna and Sinopharm, where, according to the results, immunity is increased in the vaccinated.
Final point, they say yes to the reinforcements and the mix in the US
Despite the cases listed and some others in different countries, the official regulatory authority of the United States set a precedent by decreeing that they can be administered boosters to vaccines, particularly those administered on North American soil: Pfizer- BioNTech, Moderna y Johnson & Johnson.
Although the one from Pfizer had already been authorized for the elderly, it is now confirmed that those who are over 65 years old, have more than six months with the complete scheme or are vulnerable due to their work or young people with health problems can receive the reinforcement of any Mark.
For people who have their only dose of Johnson & Johnson, they did urge that within two months of applying it they receive a new inoculation from any pharmaceutical company. The decision is due to the fact that this preparation has a lower effectiveness compared to the others, which can increase the risk of infection by Covid-19.