Sales of nonprescription cold remedies: a unique method of influenza surveillance - PubMed (original) (raw)

Sales of nonprescription cold remedies: a unique method of influenza surveillance

R C Welliver et al. Pediatr Res. 1979 Sep.

Abstract

In 1976, the National Institute of Allergy and Infectious Disease sponsored a nationwide network for influenza surveillance. In this paper, in addition to reporting the surveillance findings in Los Angeles, sales of nonprescription cold remedies in a large supermarket chain were evaluated as an indicator of influenza activity in the community. Twenty-seven isolates of influenza B occurred between February 17 and April 26, 1977. Peak influenza B activity occurred from mid-March to early April, 1977. A 5-10% increase in percent of respiratory and febrile respiratory illness seen in outpatient clinics was observed in late December and January. No variation in these statistics occurred during the peak of influenza activity. In contrast, sales of nonprescription cold remedies were apparently influenced by influenza B activity. Peak sales (345% increase) occurred 4 wk after the first influenza B isolate and 1 wk before peak influenza activity was documented by peak rates of isolation.

PubMed Disclaimer

Publication types

MeSH terms

Substances

LinkOut - more resources