Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated
Background. Individuals who were vaccinated against seasonal influenza or had a history of pneumococcal vaccination were found to be less likely to become infected and tolerate COVID-19 more easily. However, it has not been sufficiently studied how vaccination against these infections, carried out d...
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| Format: | Article |
| Language: | Russian |
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Numikom LLC
2023-09-01
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| Series: | Эпидемиология и вакцинопрофилактика |
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| Online Access: | https://www.epidemvac.ru/jour/article/view/1853 |
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| author | M. P. Kostinov N. Yu. Nastaeva A. E. Vlasenko A. M. Kostinova K. V. Mashilov E. G. Simonova |
| author_facet | M. P. Kostinov N. Yu. Nastaeva A. E. Vlasenko A. M. Kostinova K. V. Mashilov E. G. Simonova |
| author_sort | M. P. Kostinov |
| collection | DOAJ |
| description | Background. Individuals who were vaccinated against seasonal influenza or had a history of pneumococcal vaccination were found to be less likely to become infected and tolerate COVID-19 more easily. However, it has not been sufficiently studied how vaccination against these infections, carried out during the pandemic period, can affect the incidence of COVID-19.Aims. The purpose of the investigation: to study the effect of vaccination against influenza and pneumococcal infection carried out during the pandemic of a new coronavirus infection on the susceptibility and course of COVID-19 in healthcare workers.Materials and methods. In August- Setempber 2020, after the first rise in the incidence of COVID-19, out of 547 employees (aged 18 to 70 years) of a medical organization (MO), 266 (49%) were vaccinated against influenza (group II, n = 98), pneumococcal infection (group III, n = 60) and combined vaccination (group IV, n = 108), while 281 (51%) remained unvaccinated (group 1). Follow-up period: from September 2020 to March 2021 with the registration of the incidence of acute respiratory infections (ARI) according to primary medical records and the use of PCR methods for SARS-CoV-2, epidemiological and statistical analysis.Results. Two months after the start of the study, the proportion of cases of COVID-19 in the 1st group (unvaccinated) was 5% versus 1% in the 4th group (persons vaccinated with two vaccines), after 4 months – 15% and 5%, respectively, and at the end of observation (166 days) – 16% and 8%, respectively. That is, among unvaccinated individuals, the risk of getting COVID-19 was higher by HR = 2.1 [95% CI: 1.0÷4.7] times. The time between the start of observation and a positive test for COVID-19 in study participants was significantly higher in the 4th group compared to the group I: 106 [60–136] days versus 47 [17–75] days. The distribution of patients with COVID-19 according to the severity of viral pneumonia showed that in unvaccinated patients in most (64%) cases, pneumonia had a moderate to severe course, while in the 4th group of patients with combined vaccination in 100% of cases, mild (p = 0.04 for the entire sample).Conclusions. During the COVID-19 epidemic rises, vaccination against respiratory infections remains relevant, reducing the number of cases, the severity of the coronavirus infection and preventing the occurrence of co-infections. |
| format | Article |
| id | doaj-art-88b003b1b60a4403ba4cbdcde27e7d8c |
| institution | DOAJ |
| issn | 2073-3046 2619-0494 |
| language | Russian |
| publishDate | 2023-09-01 |
| publisher | Numikom LLC |
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| series | Эпидемиология и вакцинопрофилактика |
| spelling | doaj-art-88b003b1b60a4403ba4cbdcde27e7d8c2025-08-20T03:01:33ZrusNumikom LLCЭпидемиология и вакцинопрофилактика2073-30462619-04942023-09-01224566610.31631/2073-3046-2023-22-4-56-66957Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in VaccinatedM. P. Kostinov0N. Yu. Nastaeva1A. E. Vlasenko2A. M. Kostinova3K. V. Mashilov4E. G. Simonova5II Mechnikov Research Institute of Vaccines and Serums; First Moscow State Medical University named after I.M. Sechenov (Sechenov University)Novorossiysk Clinical Center of FMBA of RussiaNovokuznetsk State Institute for Postgraduate Medical Education, branch of the Russian Medical Academy of Continuing Professional EducationFirst Moscow State Medical University named after I.M. Sechenov (Sechenov University)II Mechnikov Research Institute of Vaccines and SerumsPO First Moscow State Medical University named after I.M. SechenovBackground. Individuals who were vaccinated against seasonal influenza or had a history of pneumococcal vaccination were found to be less likely to become infected and tolerate COVID-19 more easily. However, it has not been sufficiently studied how vaccination against these infections, carried out during the pandemic period, can affect the incidence of COVID-19.Aims. The purpose of the investigation: to study the effect of vaccination against influenza and pneumococcal infection carried out during the pandemic of a new coronavirus infection on the susceptibility and course of COVID-19 in healthcare workers.Materials and methods. In August- Setempber 2020, after the first rise in the incidence of COVID-19, out of 547 employees (aged 18 to 70 years) of a medical organization (MO), 266 (49%) were vaccinated against influenza (group II, n = 98), pneumococcal infection (group III, n = 60) and combined vaccination (group IV, n = 108), while 281 (51%) remained unvaccinated (group 1). Follow-up period: from September 2020 to March 2021 with the registration of the incidence of acute respiratory infections (ARI) according to primary medical records and the use of PCR methods for SARS-CoV-2, epidemiological and statistical analysis.Results. Two months after the start of the study, the proportion of cases of COVID-19 in the 1st group (unvaccinated) was 5% versus 1% in the 4th group (persons vaccinated with two vaccines), after 4 months – 15% and 5%, respectively, and at the end of observation (166 days) – 16% and 8%, respectively. That is, among unvaccinated individuals, the risk of getting COVID-19 was higher by HR = 2.1 [95% CI: 1.0÷4.7] times. The time between the start of observation and a positive test for COVID-19 in study participants was significantly higher in the 4th group compared to the group I: 106 [60–136] days versus 47 [17–75] days. The distribution of patients with COVID-19 according to the severity of viral pneumonia showed that in unvaccinated patients in most (64%) cases, pneumonia had a moderate to severe course, while in the 4th group of patients with combined vaccination in 100% of cases, mild (p = 0.04 for the entire sample).Conclusions. During the COVID-19 epidemic rises, vaccination against respiratory infections remains relevant, reducing the number of cases, the severity of the coronavirus infection and preventing the occurrence of co-infections.https://www.epidemvac.ru/jour/article/view/1853covid-19influenza vaccinepneumococcal vaccinecombination vaccinationcovid-19 pandemic |
| spellingShingle | M. P. Kostinov N. Yu. Nastaeva A. E. Vlasenko A. M. Kostinova K. V. Mashilov E. G. Simonova Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated Эпидемиология и вакцинопрофилактика covid-19 influenza vaccine pneumococcal vaccine combination vaccination covid-19 pandemic |
| title | Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated |
| title_full | Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated |
| title_fullStr | Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated |
| title_full_unstemmed | Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated |
| title_short | Influenza and Pneumococcal Vaccination of Healthcare Workers during a Pandemic Reduces the Risk and Severity of COVID-19 in Vaccinated |
| title_sort | influenza and pneumococcal vaccination of healthcare workers during a pandemic reduces the risk and severity of covid 19 in vaccinated |
| topic | covid-19 influenza vaccine pneumococcal vaccine combination vaccination covid-19 pandemic |
| url | https://www.epidemvac.ru/jour/article/view/1853 |
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