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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The US Department of Agriculture (USDA) has found rare H3N1 influenza viruses in swine in two states in recent months, and two of the isolates carry genes from human seasonal flu viruses. The developments are grounds for serious concern about the potential spread of disease at fairs this fall, according to one animal health expert.
An analysis of 4 years of records from 505 US hospitals suggests that duplicative use of antibiotics is pervasive, leading to needless costs and potentially increasing resistance to the drugs, says a report yesterday in Infection Control and Hospital Epidemiology (ICHE).
The US Department of Homeland Security (DHS) has done a poor job of managing supplies of personal protective equipment (PPE) and antiviral medications to protect its workforce during an influenza pandemic, the department's Office of Inspector General (OIG) has found.
An H7N2 avian flu virus isolated from the farm of a Chinese man who had contracted H7N9 avian flu is a novel reassortant of H7N9 and H9N2 viruses, Chinese researchers reported yesterday in Emerging Infectious Diseases.
Saudi Arabia reported another MERS-CoV (Middle East respiratory syndrome coronavirus) case today, the second in 2 days, following a 13-day spell without any cases.
The new case involves a 52-year-old Saudi woman in Dammam, the same location as the case reported yesterday in a 60-year-old man. The new patient, who is not a healthcare worker, is hospitalized and has a preexisting disease, the Saudi Ministry of Health (MOH) said.
Researchers who sifted data from 12 recent influenza seasons in Finland concluded that about 42% of influenza B cases involved strains that were not targeted by the vaccine, which they say supports the inclusion of both influenza B lineages in seasonal flu vaccines.
In a study designed to simulate how the pandemic 2009 influenza (pH1N1) virus might have evolved, researchers say it took only nine passages in pigs for a virus to gain "greatly enhanced virulence and transmissibility" in pigs, guinea pigs, and ferrets.
A chikungunya candidate vaccine developed using noninfectious virus-like particles (VLPs) has been shown to provide long-term protection against multiple genotypes of the disease, according to results of the first human trial, conducted by researchers from the National Institute of Allergy and Infectious Diseases (NIAID) and published today in The Lancet.
The number of travel-related US chikungunya cases has grown to 580, an increase of 96 in the past week, the Centers for Disease Control and Prevention (CDC) said today in its weekly update. The number of locally acquired cases stayed at 4, for 584 total US cases.
H7N9 avian flu, which emerged in humans in China in the spring of 2013 and has since caused more than 450 cases, was found to replicate well in both the upper and lower respiratory tracts of cynomolgus macaques, a model for humans, and to show extended replication in the upper tract, indicating the possibility of prolonged shedding and transmissibility, say findings of a study today in mBio.
