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Apr 4, 2013 (CIDRAP News) – Chinese health officials today reported five more human infections, along with two more deaths, from the H7N9 avian influenza virus, which media reports said has now been detected in samples from pigeons at an agricultural market in Shanghai.
The latest reports appeared to raise the total number of cases to 14, with 6 deaths. .
Among today's new developments is the first H7N9 infection in a child, who is apparently sick with a milder illness, and media reports that a contact of one of the confirmed cases is sick with a flu-like illness.
Xinhua, citing the country's agriculture ministry, said the samples were collected at an agricultural marketplace in Shanghai's Songjiang district. Tests at China's national avian influenza reference laboratory found that gene sequences in the H7N9 viruses from the pigeons matched those that infected humans.
Originally posted by rickymouse
why do they have to give names with numbers and names. Can't they call it the seagull flu or pigeon flu. That would be better for us regular people who have no interest in technical names.
Flu viruses evolve constantly, and scientists say such changes have made H7N9 more capable of infecting pigs. Pigs are a particular concern because bird and human flu viruses can mingle there, potentially producing a bird virus with heightened ability to spread between humans, said Dr. William Schaffner, a flu expert at the Vanderbilt University School of Medicine. That's what happened in 2009 with swine flu. The scientists who inspected the genetic data also said that based on information from the genes and Chinese lab testing, the H7N9 virus appears able to infect some birds without causing any noticeable symptoms. Without obvious outbreaks of dying chickens or birds, authorities could face a challenge in trying to trace the source of the infection and stop the spread. If there are no obvious symptoms in birds or pigs "nobody recognizes the infection in animals around them. Then the transmission from animal to human may occur," Tashiro said. "In terms of this phenomenon, it's more problematic."
Without obvious outbreaks of dying chickens or birds, authorities could face a challenge in trying to trace the source of the infection and stop the spread. If there are no obvious symptoms in birds or pigs "nobody recognizes the infection in animals around them. Then the transmission from animal to human may occur," Tashiro said. "In terms of this phenomenon, it's more problematic."