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J Clin Microbiol. 1983 Jan;17(1):146-8.

Coinfections of Mycoplasma pneumoniae and Legionella pneumophila with influenza A virus.

Abstract

Serum samples from patients with documented influenza A virus infections were examined for antibodies to Legionella pneumophila and Mycoplasma pneumoniae to determine whether simultaneous or sequential infections with L. pneumophila and M. pneumoniae were complicating factors in influenza. When the frequency of copositivity of sera to influenza A virus and L. pneumophila was compared with the expected frequency for each infection alone, the difference was not statistically significant. However, when the frequency of copositivity of sera to influenza A virus and M. pneumoniae was compared with the expected frequency for each infection alone, there was a statistically significant (P less than 0.005) absence of coincident titers. Seasonal variations and differences in relative age frequencies for the two infections may partially explain the absence of coinfections. These data also suggest that in patients with either M. pneumoniae or influenza A virus infection, some type of protective mechanism which prevents coinfections with these organisms is present.

PMID:
6826698
PMCID:
PMC272590
[Indexed for MEDLINE]
Free PMC Article
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