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[Epidemiologic surveillance of influenza in Rome 1982-1984]
Abstract:
In the periods from July 1982 to June 1983 and July 1983 to June 1984, 31 strains of influenza virus, of which 19 A/H3N2 6 A/H1N1 and 6 type B, were isolated from 242 throat cultures obtained from patients with acute febrile respiratory disease. A seroepidemiological survey on 520 serum samples confirms significant activity of influenza viruses during the winterly period of 1983-1984. In the period July-August 1983 the evaluation of mortality from respiratory diseases presents an excess in respect of epidemic threshold probably ascribable to heat stroke.
Insights
Influenza virus surveillance identified 31 strains, including A/H3N2, A/H1N1, and Type B, in patients with acute febrile respiratory disease. A seroepidemiological survey confirmed significant influenza activity during the 1983-1984 winter season.
Area of Science:
- Virology
- Epidemiology
- Public Health
Context:
- Surveillance of acute febrile respiratory disease cases.
- Monitoring influenza virus activity over two periods: July 1982-June 1983 and July 1983-June 1984.
- Investigation of potential links between environmental factors and mortality.
Purpose:
- To isolate and identify influenza virus strains circulating in the population.
- To assess the epidemiological significance of influenza virus activity.
- To evaluate excess mortality from respiratory diseases and its potential causes.
Summary:
- 31 influenza virus strains (19 A/H3N2, 6 A/H1N1, 6 Type B) were isolated from 242 throat cultures.
- A seroepidemiological survey of 520 serum samples confirmed substantial influenza virus activity during the 1983-1984 winter.
- An excess in respiratory disease mortality was observed in July-August 1983, possibly linked to heat stroke.
Impact:
- Provides data on circulating influenza strains, aiding vaccine development and public health strategies.
- Highlights the importance of ongoing influenza surveillance for understanding seasonal activity.
- Suggests a potential correlation between extreme weather events and respiratory mortality, warranting further investigation.