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An outbreak of serotype 19A pneumococcal pneumonia in a relief facility in Japan
Kei Nagano1, Satoshi Kawasaki2, Hiroshi Moro1
1Department of Respiratory Medicine and Infectious Diseases, Niigata Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan.
Abstract:
An outbreak of serotype 19A Streptococcus pneumoniae occurred among the residents of a relief facility. Pneumonia developed in 5 of 99 residents (attack rate, 5.1%). We obtained pharyngeal specimens from non-onset residents, and S. pneumoniae was isolated from 6 individuals (6.4%), 5 of whom had serotype 19A.
Insights
An outbreak of 19A Streptococcus pneumoniae occurred in a relief facility, causing pneumonia in 5.1% of residents. Further testing revealed the bacteria in 6.4% of non-ill residents, with 19A being the dominant serotype.
Area of Science:
- Microbiology
- Epidemiology
- Infectious Diseases
Background:
- Serotype 19A Streptococcus pneumoniae is a significant cause of invasive pneumococcal disease.
- Outbreaks in congregate settings like relief facilities pose public health challenges.
Purpose of the Study:
- To investigate an outbreak of 19A Streptococcus pneumoniae in a relief facility.
- To determine the attack rate and identify the causative serotype.
Main Methods:
- Retrospective analysis of clinical data from residents of a relief facility.
- Collection and microbiological analysis of pharyngeal specimens from non-onset residents.
Main Results:
- An outbreak of 19A Streptococcus pneumoniae was identified.
- Pneumonia affected 5 out of 99 residents (5.1% attack rate).
- Streptococcus pneumoniae was isolated from 6.4% of non-onset residents, with 5 cases identified as serotype 19A.
Conclusions:
- Serotype 19A Streptococcus pneumoniae was the likely cause of the outbreak.
- The findings highlight the potential for rapid transmission in communal living environments.
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