Showing posts with label H1N1. Show all posts
Showing posts with label H1N1. Show all posts

Swine Flu Could Eventually Affect 40% of Americans: CDC


The H1N1 swine flu could end up affecting as many as 40 percent of Americans, if one includes workers who stay home to care for people who contract the illness, U.S. health officials said Friday.

The projection from the U.S. Centers for Disease Control and Prevention is based on the influenza pandemic in 1957, when almost 70,000 people in the United States died from the flu.

"Our planning assumptions for a severe pandemic were that up to 40 percent of the workforce might be affected and not able to work, either because they were ill or because they needed to stay home to care for an ill family member," Dr. Anne Schuchat, director of CDC's National Center for Immunization and Respiratory Diseases, said Friday in a press conference.

But even if the new H1N1 virus never reaches that proportion, it is expected to gain strength come fall.

"We had a 6 to 8 percent attack rate just during the spring months," Schuchat said. "We think that in a longer winter season, attack rates would be two to three times as high as that," she said.

A public health campaign and a vaccination program, which will probably begin in October, could reduce the impact of the H1N1 swine flu, she said.

"We think we can limit, somewhat, the illness and severe complications of that kind of virus circulation with updated guidance and, of course, with the efforts we are making towards the development of a vaccine," Schuchat said.

Vaccine trials, already underway in Australia, are expected to begin in the United States next week, Schuchat said.

U.S. officials hope to have 160 million doses of injectable swine flu vaccine on hand by October, with more doses coming in the form of a nasal spray -- if trials of experimental vaccines are successful.

To determine who should receive the vaccine first, the CDC's Advisory Committee on Immunization Practices will meet Wednesday.

In the Southern Hemisphere, where it is winter now, seasonal flu and the new H1N1 swine flu continue to spread, Schuchat said.

The good news is that "specimens we have collected have not changed. They are still the same strain we are seeing here, meaning that the vaccine we are working on is directed against the strain that is still active both here in the U.S. and in Southern Hemisphere countries," she said.

Also, the CDC, in this week's Morbidity and Mortality Weekly Report, cited four children in Texas who developed neurological complications from encephalitis, associated with the H1N1 flu. Two of them also had seizures, but all recovered and had no lasting neurological effects after leaving the hospital.

"This is a reminder that seizure, encephalitis and other neurologic complications can occur in the setting of influenza," she said.

Although less severe in summer, the H1N1 swine flu continues to spread, especially in summer camps and schools, Schuchat said.

Reacting to reports that some camps are giving children the antiviral drug Tamiflu in hopes of preventing the virus, Schuchat advised against this. Camps should follow the CDC's guidelines on protecting campers from the flu, she said.

Giving antiviral medications in hopes of providing a general immunity can increase the odds that the virus will become resistant to the drugs, Schuchat said. To date, five cases of the H1N1 flu have proved resistant to Tamiflu, she noted. So far, this resistant strain has not been passed on to anyone else, she said.

The CDC also reported Friday that there have been 43,771 confirmed cases of H1N1 infection and 302 deaths in the United States, although officials believe more than 1 million Americans have been stricken with swine flu. The reason for the disparity: The virus continues to produce mild symptoms and patients typically recover quickly. This was the final CDC report of case numbers, Schuchat said, noting in the future it will document swine flu trends.


Original Post: www.healthday.com

Britain bids to quell flu fears

LONDON (AFP) - – Britain announced plans Monday to vaccinate half the population against swine flu by year's end as Russian health officials warned the virus was now affecting all parts of Europe's largest country.

As dozens more British students were quarantined in Beijing over fears they may have A(H1N1), Health Secretary Andy Burnham told members of the London parliament that the government expected to receive the first supplies of a vaccine next month.

Russia, which had restricted the number of cases to single figures, urged all citizens to vaccinate themselves against the virus which Israel warned could hit a quarter of the population there within a matter of months.

Meanwhile the worldwide death toll gathered pace with Ecuador announcing seven new fatalities and Australia reporting three new swine flu-related deaths.

Britain is the worst-hit territory in Europe, with estimates of 55,000 new cases of the A(H1N1) virus last week.

Burnham told the House of Commons that two contracts had already been signed with manufacturers to supply enough vaccines for the four constituent nations of England, Northern Ireland, Scotland and Wales.

"According to their delivery schedules, we should begin receiving supplies from August, with enough becoming available for at least 30 million people by the end of the year," he said.

National Health Service and social care staff would be among those in priority groups offered vaccination first, he added.

Should the swine flu epidemic worsen the British economy could contract 7.5 percent this year, the Ernst and Young ITEM Club group of economists said.

ITEM said the British economy would contract 4.5 percent this year, but if the A(H1N1) virus hit 50 percent of the British population and 0.4 percent of those affected died, it could shrink three percentage points more.

With China desperate to contain the virus, at least 178 foreign students and teachers were in quarantine in Beijing Monday, with 10 hospitalised after testing positive for the virus.

"We can confirm that a group of 107 British school children and teachers from various schools in the UK are being held in quarantine," the British embassy in Beijing said in a statement.

Meanwhile, at least 71 American students also were under quarantine at the same Beijing hotel, said Nicholas Phillips, a teacher from the US state of Oregon.

Phillips added there were other American students and teachers who had arrived separately, but did not know how many.

The British embassy said nine British children had been diagnosed with the virus and hospitalised while Phillips said one of his American students was in hospital.

China has responded aggressively to swine flu with temperature checks for arriving international passengers.

There have been around 1,500 positive cases of the virus there, although no deaths have been reported.

In Russia, public health chief Gennady Onishchenko said the government had registered "a sharp increase" in cases.

"The virus is now not just Moscow's property but also that of the regions. "I advise maximum vaccination," he added.

The ability of the virus to spread rapidly was highlighted in Croatia where the number of swine flu cases more than tripled.

EU Health Commissioner Androulla Vassiliou meanwhile said in Lisbon the EU's executive arm would help members among the EU bloc's 27 nations which as yet have no vaccine stocks.

Discussions were also starting for others including candidate countries like Croatia and neighbouring countries, she said.

Namibia meanwhile confirmed its first two cases, health officials announced Monday.

The virus first broke out in Mexico and the vast majority of the deaths have been recorded in the Americas.