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In 2003, 89 people in the Netherlands were confirmed to have been infected by H7N7 following an outbreak in poultry on approximately 255 farms. One death was recorded – a veterinarian who had been testing chickens for the virus – and all infected flocks were culled. Most affected people had mild symptoms including conjunctivitis.
The virus is a novel strain of the influenza virus, [2] for which existing vaccines against seasonal flu provided no protection. A study at the U.S. Centers for Disease Control and Prevention (CDC) published in May 2009 found that children had no preexisting immunity to the new strain but that adults, particularly those over 60, had some degree of immunity.
A/H7N9 virus is shed in the saliva, mucus, and feces of infected birds; other infected animals may shed bird flu viruses in respiratory secretions and other body fluids. [2] Symptoms of A/H7N9 influenza vary according to both the strain of virus underlying the infection and on the species of bird or mammal affected.
A flu pandemic is when a new type of influenza virus emerges—that most people aren’t immune to—and spreads around the world. ... how well this year’s vaccine and flu strains match, says Dr ...
It is a pathogen with strains that infect birds and some mammals, as well as causing seasonal flu in humans. [2] Mammals in which different strains of IAV circulate with sustained transmission are bats, pigs, horses and dogs; other mammals can occasionally become infected. [3] [4] IAV is an enveloped negative-sense RNA virus, with a segmented ...
Boston Mayor Thomas Menino said that "people should take the threat of flu seriously" and that people should receive the influenza vaccine and practice health safety. [4] By 7 January 2013, there were 15,000 cases of flu reported in the state of New York. [5] In the previous year's entire flu season, there were only 4,400 cases in the same ...
Flu activity elevated in most U.S. states. The Department of Health and Human Services (HHS), of which the Centers for Disease Control and Prevention (CDC) is a part, often breaks the country up ...
The UK’s first human case of swine flu strain H1N2 has been detected, ... the new strain differs from these cases, but is similar to viruses found in UK pigs. ... said the symptoms of swine flu ...
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