Infection Control

CDC releases alert on H3N2

Infection Control Weekly Monitor, August 11, 2010

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After reports of two small outbreaks of H3N2 in Iowa and sporadic cases in 11 other states, the CDC released an alert to healthcare facilities to be on the lookout for influenza cases.

The CDC advises clinicians to consider influenza as a possible diagnosis with patients who have acute respiratory illnesses. Treatment decisions should not be based solely on rapid influenza diagnostic tests results, since they have only moderate sensitivity.

“Antiviral treatment, when clinically indicated, should not be delayed pending definitive laboratory confirmation of influenza,” the alert reads. “Influenza antiviral medications are most effective when initiated within the first 2 days of illness, but these medications may also provide benefits for severely ill patients when initiated even after 2 days.”



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