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The immunity rate of the Thessaloniki population almost quadrupled in November compared to October due to wide dispersion.
Far from what we call it “Group immunity”, despite the large size of the second pandemic wave of coronavirusare the areas of the country with the highest epidemiological burden, such as Thessaloniki. According to the results COVID-19 seroepidemiological study, in November the percentage of immunity of its population The Thessaloniki Regional Unit was at 5.45%, which given the reliability limits of the sample can reach up to 7%.
The immunity rate of the Thessaloniki population almost quadrupled in November compared to October due to the widespread spread of the virus and is highest at a young age, confirming the important role that young people play in the spread of the epidemic.
According to kathimerini.gr, the results of the rolling COVID-19 seroepidemiological study, carried out by the Laboratory of Hygiene and Epidemiology of the Faculty of Medicine of the University of Thessaly in collaboration with other universities in the country (EKPA, AUTh, University of Crete) and with the Ministry of Health and EODY and the company Cosmos Aluminum SA, was presented yesterday by the Professor of Hygiene and Epidemiology at the University of Thessaly, Christos Hadjichristodoulou, at the Panhellenic Conference on Health Economics and Policies 2020.
The study covers the period from March 2020 to January 2021 and is carried out by detecting antibodies in the remaining sera of individuals who went to private and public microbiological laboratories for routine tests.
According to the study, in November the immunity rate of the Thessaloniki population was estimated at 5.47% (confidence limit of 3.6% to 7.3%) compared to 1.39% (0.45 % -3.12%) which was in October and 0.23% in September.
Regarding the distribution by age, the highest immunity rate in November was observed in the group from 0 to 29 years old, where it reached 5.95%, and the lowest in the group from 50 to 69 years old (3.9% ).
In Larissa
Respectively, in the Larissa Regional Unit, which also has a high epidemic burden, in November the immunity rate was estimated at 3.5% (confidence limit 1.74% to 5.30%). Speaking to Kathimerini, Mr. Christodoulou described the recorded immunity rates as expected and highlighted: “It seems that we are a long way from herd immunity. That means we need the vaccine to control the pandemic.
Initial research results show that nationwide the second wave found the population with very low immunity. It is indicative that in April the immunity rate was 0.25%, in May it increased to 0.35% and in July it was 0.24%. It should be noted that the reduction in the rates of immunity detected in the samples over time may be due to the fact that almost 30% (according to studies) of those infected with SARS-CoV-2 stop showing a detectable antibody titer in two months. after infection.
Women, urban areas
In the first phase of the pandemic, women appeared to have a higher immunity rate (0.78% women, 0.22% men). The same was observed in those who lived in urban areas (0.85% vs 0.01% in non-urban areas). Finally, the study shows that in the first phase of the pandemic, one laboratory-confirmed case corresponded to ten additional cases that had not been identified and diagnosed.
The investigation is ongoing and in this phase the data for November for the entire country are analyzed. Researchers are even focusing on Crete and Santorini, to determine the impact that the opening of tourism has had on the spread of the virus.
Source: kathimerini.gr
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