Anette Hulth Gustaf Rydevik Annika Linde
10.1371/journal.pone.0004378
PLoS One
2009;4(2):e4378.
CC BY
https://pubmed.ncbi.nlm.nih.gov/19197389/
Influenza, Human / epidemiology Internet Sentinel Surveillance
Influenza, Human / epidemiology Internet Sentinel Surveillance Research Support, Non-U.S. Gov't Humans Reproducibility of Results Time Factors
PMC2634970
19197389
Web queries as a source for syndromic surveillance
2009