April 27th, 2009
| | Posted in Economy
Now that the Swine Flue has surfaced in Canada, let’s hope it doesn’t touch off a SARS panic… the cases are mild so far.
Makes me glad I get to work from home.
Federal health officials have confirmed six cases of human swine influenza in British Columbia and Nova Scotia and are warning more cases are likely in the near future.
Dr. Donald Low, the chief microbiologist at Mount Sinai Hospital in Toronto who played a key role in battling the SARS crisis in 2003, said:
What you’re seeing here is the makings of a pandemic,” Low said. “You’re seeing a new virus that we have no natural immunity to. You’re seeing a virus that can cause disease, and in causing disease, can transmit from person to person.
“All it needs to complete that equation is the recognition that it’s spreading over a wide geographical area. And I think that’s what we’re hearing this weekend, that it’s actually happening,” he said.
They’ve declared a public health emergency in the US:
As a consequence of confirmed cases of Swine Influenza A (swH1N1) in California, Texas, Kansas, and New York, on this date and after consultation with public health officials as necessary, I, Charles E. Johnson, Acting Secretary of the U.S. Department of Health and Human Services, pursuant to the authority vested in me under section 319 of the Public Health Service Act, 42 U.S.C. § 247d, do hereby determine that a public health emergency exists nationwide involving Swine Influenza A that affects or has significant potential to affect national security.
Acting HHS Secretary Charles E. Johnson
From the Center For Disease Control:
Human cases of swine influenza A (H1N1) virus infection have been identified in the United States. Human cases of swine influenza A (H1N1) virus infection also have been identified internationally. The current U.S. case count is provided below.
Investigations are ongoing to determine the source of the infection and whether additional people have been infected with swine influenza viruses.
CDC is working very closely with officials in states where human cases of swine influenza A (H1N1) have been identified, as well as with health officials in Mexico, Canada and the World Health Organization. This includes deploying staff domestically and internationally to provide guidance and technical support. CDC has activated its Emergency Operations Center to coordinate this investigation.
Laboratory testing has found the swine influenza A (H1N1) virus susceptible to the prescription antiviral drugs oseltamivir and zanamivir and has issued interim guidance for the use of these drugs to treat and prevent infection with swine influenza viruses. CDC also has prepared interim guidance on how to care for people who are sick and interim guidance on the use of face masks in a community setting where spread of this swine flu virus has been detected. This is a rapidly evolving situation and CDC will provide new information as it becomes available.
What is Swine Influenza?
Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.
How many swine flu viruses are there?
Like all influenza viruses, swine flu viruses change constantly. Pigs can be infected by avian influenza and human influenza viruses as well as swine influenza viruses. When influenza viruses from different species infect pigs, the viruses can reassort (i.e. swap genes) and new viruses that are a mix of swine, human and/or avian influenza viruses can emerge. Over the years, different variations of swine flu viruses have emerged. At this time, there are four main influenza type A virus subtypes that have been isolated in pigs: H1N1, H1N2, H3N2, and H3N1. However, most of the recently isolated influenza viruses from pigs have been H1N1 viruses.
Swine Flu in Humans
Can humans catch swine flu?
Swine flu viruses do not normally infect humans. However, sporadic human infections with swine flu have occurred. Most commonly, these cases occur in persons with direct exposure to pigs (e.g. children near pigs at a fair or workers in the swine industry). In addition, there have been documented cases of one person spreading swine flu to others. For example, an outbreak of apparent swine flu infection in pigs in Wisconsin in 1988 resulted in multiple human infections, and, although no community outbreak resulted, there was antibody evidence of virus transmission from the patient to health care workers who had close contact with the patient. More »