Causes of Rejection or Acceptance of Herd Immunity Against Covid-19 Infection
Causes of Rejection or Acceptance of Herd Immunity Against Covid-19 Infection
Omid salmani ,1,*
1. B.S of General Biology, Payamenoor University, Marand Branch, Iran
Introduction: Introduction: Herd immunity, often known as 'population immunity' is the indirect protection against an infectious illness that occurs when a population has gained immunological immunity as a result of a prior illness. The goal of this study is to look at the causes and outcomes of some research on herd immunity rejection and acceptance in Covid-19.
Methods: Search Method: The study method is based on the articles and reports of the World Health Organization on herd immunity against coronavirus, which were analyzed by searching scientific databases such as Science Direct, Springer, Google Scholar, PubMed.
Results: Results: the results of Many immunity tests which have been conducted in the Covid-19 indicate that herd immunity against Covid-19 is rejected for a variety of reasons. The most important one is that vast numbers of individuals must be exposed to the disease to determine their safety. On the other hand, it is unclear when safety will be achieved, and it is related to the number of people who become immune after COVID-19. In addition, many people will have to die to acquire herd immunity. It's unclear whether the infection provides immunity against future infections, or how long that protection will remain. According to the findings of some researches, there have also been cases of infections, were infected with COVID-19 for the second time. Furthermore, Coronavirus immunity is usually just temporary. For example, researches of survivors of the SARS-CoV (Severe acute respiratory syndrome coronavirus) epidemic indicated that patients who were IgG positive were kept immunity in >90% of the patients for 2 years. SARS-CoV antibodies were not found 6 years after infection, according to another study. Antibody responses in patients with asymptomatic or moderate illness are less than individuals with severe disease in numerous coronaviruses. There is currently no proof that those who have recovered from COVID-19 and have antibodies are immune to infection in the future.
Conclusion: Conclusion: The summary of the results of the researches, as well as the World Health Organization (WHO), believes 'herd immunity' through vaccination, not by allowing disease to spread through any segment of the population, as this would result in unnecessary cases and deaths. COVID-19 herd immunity should be obtained through vaccination rather than by exposing them to the organism that causes the disease.