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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Some markers of flu activity held steady, while others showed smaller decreases than in recent weeks.
Austrian researchers who studied samples from 533 children with lab-confirmed flu during the 2014-15 season found that 13 of them (2.4%) were infected by influenza A, then subsequently infected with influenza B after they had recovered.
Exceptional Ebola surveillance and swift responses to outbreaks will be the key to taking advantage of the availability of Ebola vaccines, say three experts who offered their thoughts on the future use of such vaccines in a new article from the World Health Organization (WHO).
Major markers of US influenza generally continued their gradual decline last week, but seven more flu-related deaths in children were reported, according to the Centers for Disease Control and Prevention's (CDC's) weekly update today.
Flu activity in the Northern Hemisphere remains high but has likely peaked, with several regions detecting increases in flu B, the World Health Organization (WHO) said in an Apr 4 update.
Flu levels in North America remain elevated because of H1N1 circulation, and Canada reported increasing proportions of flu B.
Cattle serve as a natural reservoir for influenza D, which causes mild upper respiratory disease and can be transmitted to other cattle through contact, according to a Mar 30 study in the Journal of Virology.
By most measures, the seasonal influenza epidemic in the United States waned further last week, the Centers for Disease Control and Prevention (CDC) said in an update today, continuing a trend first apparent a week earlier.
Only 7 states and Puerto Rico are still experiencing high levels of influenza-like illness.
Flu levels in Europe and North America continued to rise, with high but stable activity noted in northern Asia and China, the World Health Organization (WHO) said in a Mar 21 update.
The 2009 H1N1 virus is the predominant strain worldwide, though detections of influenza B have increased in Europe and northern Asia.
Another fatal Ebola case has been reported in Guinea's recent Ebola cluster, involving a young girl who was hospitalized at an Ebola treatment center, Reuters reported on Mar 19, citing a spokesman for the country's Ebola coordination center.
