With increasing time since diagnosis, only the severe infections continued to cause symptoms.
The loss of activity is equivalent to 15% of the US population becoming completely immobile for 1 day.
Adult COVID-19 patients also infected with the flu are 4 times more likely to need mechanical ventilation and 2.4 times more likely to die.
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Canadian data show that kids under 10 years may be especially vulnerable to the H1N1 strain.
An outbreak of 2009 H1N1 seasonal flu in a remote indigenous hill tribe in Laos killed 16 people and triggered a quick response from local health officials in Thailand, according to a report from the US Centers for Disease Control and Prevention (CDC), which also assisted.
The flu season has now extended for 19 weeks, and pediatric flu deaths hit 82.
The Maryland State Senate and House of Delegates yesterday passed bills to strengthen a state law that restricts the routine use of antibiotics in animals that aren't sick.
Flu activity in most of the Northern Hemisphere is declining, with influenza A viruses still predominanting, the World Health Organization (WHO) said today in an update that covers data to Mar 17.
The CDC, in an alert to clinicians, says flu season is likely to last several more weeks.
The CDC says the surging H3N2 strain is especially tough on older adults.
More than half of postgraduate hospital trainees self-reported that they come to work while experiencing influenza-like illness (ILI) symptoms, despite also saying that doing so poses a risk to patients, according to a study yesterday in the American Journal of Infection Control.
Several indicators show a downward trend, but deaths in kids have reached 68 and hospitalizations continue to climb.
In updates for epidemiologic weeks 10 and 11, the Saudi Arabian Ministry of Health (MOH) announced five new cases of MERS-CoV today and over the weekend, including two in Wadi ad-Dawasir, the site of an ongoing hospital-based outbreak.