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.
The roadmap offers a powerful opportunity to leverage advances in vaccine science to better protect against influenza, including pandemic flu.
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US flu activity increased slightly again last week, reflecting a season that's off to a slower start compared with the previous year, according to the latest data today from the Centers for Disease Control and Prevention (CDC).
For the third week in a row, US influenza activity increased slightly, with H3N2 still the dominant strain, the Centers for Disease Control and Prevention (CDC) said today.
The percentage of clinic visits for influenza-like illness (ILI) rose from 1.6% to 1.9%, according to the CDC update, which covers the week through Nov 28. That level is still below the national baseline of 2.1%, but several regions reported elevated outpatient ILI levels.
Past exposure to influenza virus or antigens—whether by infection or vaccine—might reduce a person's ability to mount a broadly protective antibody response to the virus, a finding that could complicate efforts to develop a "game-changing" universal flu vaccine, according to a study yesterday in Science Translational Medicine.
Overall flu activity has remained low, with hot spots in only a few areas, such as some Middle Eastern countries including Bahrain, Oman, and Qatar, which are reporting that the 2009 H1N1 virus is the dominant strain, the World Health Organization (WHO) said yesterday in its regular update.
Agriculture officials in Vietnam reported another highly pathogenic H5N1 outbreak in poultry, while Canadian authorities reported that low pathogenic H5N2 turned up in a hunter-shot duck in British Columbia.
The US Food and Drug Administration (FDA) yesterday approved the nation's first seasonal flu vaccine containing an adjuvant—an immune-boosting substance—although European and other countries have used adjuvanted vaccines for years.
US flu activity rose slightly last week, with two regions of the country—the south central and central Midwest—at or above their regional baseline that measures clinic visits for flulike illness, the US Centers for Disease Control and Prevention (CDC) said today in its weekly update.
Nigeria yesterday notified the World Organization for Animal Health (OIE) of four outbreaks of H5N1 avian flu affecting more than 31,000 poultry, while South Korea yesterday reported 12 outbreaks of H5N8 avian flu involving more than 140,000 birds that occurred in September and October.
Global measles deaths have dropped 79% in the past 15 years, and the measles vaccine saved an estimated 17.1 million people in that span, but vaccine uptake has stagnated in recent years, the US Centers for Disease Control and Prevention (CDC) reported today in Morbidity and Mortality Weekly Report (MMWR).
Flu vaccination might alleviate symptoms of the H3N2 influenza strain, according to a small study in Vaccine.
US military researchers studied 155 patients with lab-confirmed flu from five military hospitals from 2009 through 2014. Of them, 66 had H3N2 flu, while 69 had 2009 H1N1, 3 had influenza A that wasn't subtyped, and 17 had influenza B. The vaccination rate was 72% (111 patients).
