Sunday, October 4, 2009

2009-H1N1 (swine) flu vaccine on its way to IHS clinics, ETA October 7

By Terri Hansen
Environment, Science & Health Reporter

The vaccine for the 2009 H1N1 influenza A (swine flu) virus makes it arrival at Indian Health Service clinics and facilities October 7. The seasonal flu vaccine is at the clinics now.

“We want people to get their seasonal vaccination as quickly as they can, and once the H1N1 vaccine arrives, get that as quickly as they can,” said IHS epidemiologist John Redd M.D. Those unable to make separate appointments can get both vaccines at the same time, he said.

Testing of vaccines for H1N1 shows they work with a single dose and quickly take effect.

Influenza is increasing in all 50 states, and 98 percent of it is the H1N1 strain. Most cases are occurring in children and young adults, Dr. Anne Schuchat of the Centers for Disease Control and Prevention said at a briefing. The viruses remain similar to those chosen for the 2009 H1N1 vaccine, and nearly all cases respond well to the antiviral drugs oseltamivir and zanamivir.

Clinic patients should not delay in calling their clinic to learn what the vaccination plans are, said Redd. Many clinics plan mass vaccination days.

Last month President Obama’s science advisory council released a report that said Native American populations are considered at elevated risk of severe outcomes from 2009 H1N1 infection due to their populations being “historically at high risk for severe respiratory infections,” and, “A cluster of severe H1N1 disease among First Nation people in remote Manitoba, Canada suggests these groups may be at high risk. Cases of H1N1 virus infection in these clusters have had rapidly progressive, diffuse, lower airway disease … resulting in development of acute respiratory distress syndrome and prolonged ICU admission.”

“We don’t think that American Indian and Alaska Native people strictly by virtue of being AI/AN are individually at higher risk for H1N1 disease,” said Redd. “But risk factors such as diabetes and obesity are known to be more common in American Indians and Alaska Natives, so the population may be at higher risk because of the risk factors.”

The CDC says pregnant women, health care workers, people 6 months to 24 years of age, those who care for infants and those with chronic health conditions are priorities for the H1N1 vaccination.

The IHS has a proactive approach to pneumonia prevention, a severe respiratory infection that can be a serious and sometimes life threatening complication of influenza. “We take pneumonia in itself and as a complication of flu very seriously,” Redd said. “We definitely want to stay on top of that. In 2008 we vaccinated 82 percent of the American Indian and Alaska Native population against pneumonia.” He said the IHS offers the pneumococcal vaccine, and encourages those who haven’t received the vaccination to ask for that vaccination, too.

He said IHS efforts regarding H1N1 have been vigorous. “We started the first weekend of the outbreak,” he said. “We’ve issued guidance involving use of the Strategic National Stockpile. We’ve spent a lot of time communicating with states to consider those tribal populations within their borders. We’ve done a lot of outreach to providers including community health representatives and public health nurses on getting the system ready to receive the vaccine.”

The SNS is a large stockpile of medicines and supplies designed to support public health agencies during a public health emergency. It is deployed, according to guidance issued by the federal government, as a joint effort among state, local, territorial, tribal and federal officials if the health of a community is threatened.

As far as the antiviral medications, those intended for the general population are distributed through the SNS by the states, said Redd. “In the Arizona outbreaks, we received the antivirals we needed from the state.” The IHS has some internal distribution for their health professionals if they fall ill.

Redd said a big goal of the IHS is what they call mitigation – minimizing the impact of sick patients who might overwhelm a health facility. “A small hospital could deal pretty well with taking two intensive care patients for 10 days, whereas it might be very difficult for them to take 20 ICU patients in one day,” he said. “So one of our goals is to minimize spread and slow the flu down.

“The second portion in all this is every clinic having a local flu plan. That plan includes contingency planning – if the hospital intensive care unit or the local capacity is overwhelmed, in a worst-case scenario, we’d continue to see people as outpatients.

“We’ve got all these issues very much in mind.”