Cairo Association of Teachers - Newsletter

CAT Tracks for April 27, 2009 SWINE FLU OUTBREAK

Experts: Too early to tell if swine flu will be epidemic

By MIKE STOBBE, the associated press

ATLANTA - As reports of a unique form of swine flu erupt around the world, the inevitable question arises: Is this the big one?

Is this the next big global flu epidemic that public health experts have long anticipated and worried about? Is this the novel virus that will kill millions around the world, as pandemics did in 1918, 1957 and 1968?

The short answer is it's too soon to tell.

"What makes this so difficult is we may be somewhere between an important but yet still uneventful public health occurrence here - with something that could literally die out over the next couple of weeks and never show up again - or this could be the opening act of a full-fledged influenza pandemic," said Michael Osterholm, a prominent expert on global flu outbreaks with the University of Minnesota.

"We have no clue right now where we are between those two extremes. That's the problem," he said.

Health officials want to take every step to prevent an outbreak from spiraling into mass casualties. Predicting influenza is a dicey endeavor, with the U.S. government famously guessing wrong in 1976 about a swine flu pandemic that never materialized.

"The first lesson is anyone who tries to predict influenza often goes down in flames," said Dr. Richard Wenzel, the immediate past president of the International Society for Infectious Diseases.

But health officials are being asked to make such predictions, as panic began to set in over the weekend.

The epicenter was Mexico, where the virus is blamed for 86 deaths and an estimated 1,400 cases in the country since April 13. Schools were closed, church services canceled and Mexican President Felipe Calderon assumed new powers to isolate people infected with the swine flu virus.

International concern magnified as health officials across the world on Sunday said they were investigating suspected cases in people who traveled to Mexico and come back with flu-like illnesses. Among the nations reporting confirmed cases or investigations were Canada, France, Israel and New Zealand.

Meanwhile, in the United States, there were no deaths and all patients had either recovered or were recovering. But the confirmed cases around the nation rose from eight on Saturday morning to 20 by Sunday afternoon, including eight high school kids in New York City - a national media center. The New York Post's front page headline on Sunday was "Pig Flu Panic."

The concern level rose even more when federal officials on Sunday declared a public health emergency - a procedural step, they said, to mobilize antiviral medicine and other resources and be ready if the U.S. situation gets worse.

U.S. Centers for Disease Control and Prevention officials say that so far swine flu cases in this country have been mild. But they also say more cases are likely to be reported, at least partly because doctors and health officials across the country are looking intensively for suspicious cases.

And, troublingly, more severe cases are also likely, said Dr. Richard Besser, the CDC's acting director, in a Sunday news conference.

"As we continue to look for cases, we are going to see a broader spectrum of disease," he predicted. "We're going to see more severe disease in this country."

Besser also repeated what health officials have said since the beginning - they don't understand why the illnesses in Mexico have been more numerous and severe than in the United States. In fact, it's not even certain that new infections are occurring. The numbers could be rising simply because everyone's on the lookout.

He also said comparison to past pandemics are difficult.

"Every outbreak is unique," Besser said.

The new virus is called a swine flu, though it contains genetic segments from humans and birds viruses as well as from pigs from North America, Europe and Asia. Health officials had seen combinations of bird, pig and human virus before - but never such an intercontinental mix, including more than one pig virus.

More disturbing, this virus seems to spread among people more easily than past swine flus that have sometimes jumped from pigs to people.

There's a historical cause for people to worry.

Flu pandemics have been occurring with some regularity since at least the 1500s, but the frame of reference for health officials is the catastrophe of 1918-19. That one killed an estimated 20 to 50 million people worldwide.

Disease testing and tracking were far less sophisticated then, but the virus appeared in humans and pigs at about the same time and it was known as both Spanish flu and swine flu. Experts since then have said the deadly germ actually originated in birds.

But pigs may have made it worse. That pandemic began with a wave of mild illness that hit in the spring of 1918, followed by a far deadlier wave in the fall which was most lethal to young, healthy adults. Scientists have speculated that something happened to the virus after the first wave - one theory held that it infected pigs or other animals and mutated there - before revisiting humans in a deadlier form.

Pigs are considered particularly susceptible to both bird and human viruses and a likely place where the kind of genetic reassortment can take place that might lead to a new form of deadly, easily spread flu, scientists believe.

Such concern triggered public health alarm in 1976, when soldiers at Fort Dix, N.J., became sick with an unusual form of swine flu.

Federal officials vaccinated 40 million Americans. The pandemic never materialized, but thousands who got the shots filed injury claims, saying they suffered a paralyzing condition and other side effects from the vaccinations.

To this day, health officials don't know why the 1976 virus petered out.

Flu shots have been offered in the United States since the 1940s, but new types of flu viruses have remained a threat. Global outbreaks occurred again in 1957 and 1968, though the main victims were the elderly and chronically ill.

In the last several years, experts have been focused on a form of bird flu that was first reported in Asia. It's a highly deadly strain that has killed more than 250 people worldwide since 2003. Health officials around the world have taken steps to prepare for the possibility of that becoming a global outbreak, but to date that virus has not gained the ability to spread easily from person to person.

From the Southeast Missourian...

Swine flu fears close schools in NY, Texas, Calif.

KAREN MATTHEWS
Associated Press Writer

NEW YORK (AP) — Esti Lamonaca's illness started with a high fever, a cough and achy bones, just a couple of days after she returned from a spring break trip on the beach in Cancun with friends. By the weekend, her voice was hoarse and she was wearing a surgical mask.

The 18-year-old senior is one of at least eight students at her New York City high school who health officials say have been sickened by a strain of swine flu suspected in the deaths of 103 people in Mexico. It has now spread to the United States, where authorities have confirmed 20 cases.

However, all of those sickened in the U.S. have recovered or are recovering. That's a stark difference from the lethal outbreak in Mexico that authorities can't yet explain.

Officials at Lamonaca's school, St. Francis Preparatory in Queens, learned that something was wrong there on Thursday when students started lining up at the nurse's office complaining of fever, nausea, sore throats and achy bones. It wasn't long before the line was out the door.

The nurse notified the city Health Department that day. On Friday, more students were getting sick, and the department dispatched a team to the school at about 1:30 p.m. But they got caught in traffic and didn't arrive until 3:30 p.m, just as classes were letting out for the weekend, said Brother Leonard Conway, the school's principal.

By then, there were only a few students left, and health officials quickly tested them for swine flu. While only eight cases are confirmed, more than 100 students are suspected to have been infected. Officials think they started getting sick after some students returned from the spring break trip to Cancun.

The U.S. government declared a public health emergency Sunday to respond to the outbreak, which also has sickened people in Kansas, California, Texas and Ohio. Many of them had recently visited Mexico. Roughly 12 million doses of the antiviral drug Tamiflu will be moved from a federal stockpile to places where states can quickly get their share if they decide they need it, Homeland Security Secretary Janet Napolitano said.

Cleaning crews spent Sunday scrubbing down St. Francis, which will be closed for days.

"I haven't been out of my house since Wednesday and am just hoping to make a full recovery soon," Lamonaca said. "I am glad school is closed because it supposedly is very contagious, and I don't want this to spread like it has in Mexico."

Some schools in Texas, California and Ohio also were closing after students were found or suspected to have the flu.

The outbreak has people on edge across the country.

Officials along the U.S.-Mexico border asked health care providers to take respiratory samples from patients who appear to have the flu. Travelers were being asked if they visited flu-stricken areas.

In San Diego, signs posted at border crossings, airports and other transportation hubs advised people to "cover your cough." At Los Angeles International Airport, Alba Velez, 43, and her husband Enrique, 46, were wearing blue face masks — purely as a precaution — when they returned from a trip to Mexico.

The Los Angeles couple hadn't seen anyone sick while in Guadalajara but were nervous because of the stream of information about new cases. The two were wearing the masks because they're "just cautious," Enrique Velez said.

It was a different story for travelers heading south of the border.

"I'm worried," said Sergio Ruiz, 42, who checked in for a flight to Mexico City after a business trip to Los Angeles and planned to stay inside when he got home. "I'm going to stay there and not do anything."

In Ohio, a 9-year-old boy was infected with the same strain suspected of killing dozens in Mexico, authorities said. The third-grader had visited several Mexican cities on a family vacation, said Clifton Barnes, spokesman for the Lorain County Emergency Management Agency.

"He went to a fair, he went to a farm, he went to visit family around Mexico," Barnes said.

The boy has a mild case and is recovering at home in northern Ohio, authorities said.

In New York, Jackie Casola — whose son Robert Arifo is a sophomore at St. Francis — said her son told her a number of students had been sent home sick Thursday and hardly anyone was in school Friday.

Arifo hasn't shown any symptoms, but some of his friends have, his mother said. And she has been extra vigilant about his health.

"I must have drove him crazy — I kept taking his temperature in the middle of the night," she said.

Associated Press writers Josh Hoffner, Jennifer Peltz and Deepti Hajela in New York, Michael R. Blood in Los Angeles, Michelle Roberts in San Antonio and Meghan Barr in Columbus, Ohio, contributed to this report.