NEJM: Studies have revealed that COVID19 infection produces long-term protective body fluid immunity.

September 3, 2020 /--- A new study from Iceland suggests that immunity to COVID19 may not be as short-lived as first thought.
study found that among 30,000 Icelandic residents tested for COVID-19 antibodies, the researchers found that the antibodies remained in the human system for at least four months.
487 people who tested positive for coronavirus received multiple antibody tests.
the first two months after diagnosis, antibodies that give immunity increase significantly.
, antibody levels remained stable over the next two months, according to a study published Tuesday in the journal New England Journal of Medicine.
In a commentary accompanying the study, scientists at Harvard University and the National Institutes of Health noted that while Iceland's research focuses largely on homogenous populations, "this study offers hope that host immunity to this unpredictable and highly contagious virus may not be transient and may be similar to most other viral infections."
study of the "Coronavirus Antibody" showed that immunity existed for a very short period of time, making people vulnerable to re-infection.
, however, the Icelandic study offers hope that a vaccine that triggers a strong immune response will have a more lasting effect than some believe.
interestingly, Icelandic researchers also found higher levels of antibodies in women, non-smokers and older patients, as well as those with more serious infections.
According to the Post, more than 170 countries are discussing the purpose of participating in the CoVID-19 Vaccine Global Access Facility, which aims to accelerate vaccine development, ensure doses in all countries and distribute them to the most at-risk populations in each population.
, led by the World Health Organization, the Alliance for Innovation against Epidemics and the Alliance for Vaccines, is supported by Japan, Germany and the European Union.
(bioon.com) Source: Antibody study suggests more lasting immunity against COVID than believed Daniel F. Gudbjartsson et al. Humoral Immune Response to SARS-CoV-2 in Iceland. NEJM, 2020, doi:10.1056/NEJMoa2026116.