Here Damien Dancy puts masks on his children Damaya, 3, left, and Damien, 7, on Wednesday, Jan. 9, 2013 at Sentara Princess Anne Hospital in Virginia Beach, Va. Hospitals in Hampton Roads are urging patients and visitors to wear a mask at their facilities to help stop the spread of the flu. The recommendation was issued Wednesday by more than two dozen medical centers. In a joint statement, the hospitals said the recommendation applies to hospitals, urgent care centers and branch clinics, among others. (AP Photo/The Virginian-Pilot, Stephen M. Katz)
Here Damien Dancy puts masks on his children Damaya, 3, left, and Damien, 7, on Wednesday, Jan. 9, 2013 at Sentara Princess Anne Hospital in Virginia Beach, Va. Hospitals in Hampton Roads are urging patients and visitors to wear a mask at their facilities to help stop the spread of the flu. The recommendation was issued Wednesday by more than two dozen medical centers. In a joint statement, the hospitals said the recommendation applies to hospitals, urgent care centers and branch clinics, among others. (AP Photo/The Virginian-Pilot, Stephen M. Katz)
Pam Horn administers the flu vaccine to employee Michael Karolitzky at Philly Flu Shots on Thursday, Jan. 10, 2013, in Philadelphia. The flu season arrived early in the U.S. this year, but health officials and experts say it's too early to say this will be a bad one. Experts say evidence so far is pointing to a moderate flu season - it just looks worse because last year's season was so mild. Flu usually doesn't blanket the country until late January or February. Now, it's already widespread in more than 40 states. That could change when the next government report comes out Friday. (AP Photo/Matt Rourke)
This Monday, Jan. 7, 2013 photo shows a tent prepared for expected flu patients outside of the Emergency Room at Lehigh Valley Hospital at Cedar Crest, in Salisbury Township, Pa. The tent was set up after cases were piling up at the Salisbury Township hospital Monday, with the hospital reporting an extremely busy flu season so far. The flu season arrived early in the U.S. this year, but health officials and experts say it's too early to say this will be a bad one. Experts say evidence so far is pointing to a moderate flu season - it just looks worse because last year's season was so mild. Flu usually doesn't blanket the country until late January or February. Now, it's already widespread in more than 40 states. That could change when the next government report comes out Friday. (AP Photo/Express-Times, www.lehighvalleylive.com, Matt Smith)
Vials of flu vaccine are displayed at Philly Flu Shots on Thursday, Jan. 10, 2013 in Philadelphia. The flu season arrived early in the U.S. this year, but health officials and experts say it's too early to say this will be a bad one. Experts say evidence so far is pointing to a moderate flu season - it just looks worse because last year's season was so mild. Flu usually doesn't blanket the country until late January or February. Now, it's already widespread in more than 40 states. That could change when the next government report comes out Friday. (AP Photo/Matt Rourke)
NEW YORK (AP) ? From the Rocky Mountains to New England, hospitals are swamped with people with flu symptoms. Some medical centers have limited visitors, and one Pennsylvania hospital set up a tent outside its ER to handle the feverish patients.
Flu season in the U.S. has hit early and, in some places, hard. But whether this will be considered a bad season by the time it has run its course in the spring remains to be seen.
"Those of us with gray hair have seen worse," said Dr. William Schaffner, a flu expert at Vanderbilt University in Nashville.
The evidence so far is pointing to a moderate season, Schaffner and others believe. It just looks bad compared with last year ? an unusually mild one.
Flu usually doesn't blanket the country until late January or February, but it is already widespread in more than 40 states.
What's probably complicating the situation: The main influenza virus this year tends to make people sicker. And there are other bugs out there causing flu-like illnesses. So what people are calling the flu may, in fact, be something else.
"There may be more of an overlap than we normally see," said Dr. Joseph Bresee, who tracks the flu for the Centers for Disease Control and Prevention.
The flu's early arrival in the U.S. coincided with spikes in a variety of other viruses, including a childhood malady that mimics flu and a new norovirus that causes what some people call "stomach flu."
Most people don't undergo lab tests to confirm flu, and the symptoms are so similar that it's sometimes hard to distinguish flu from other viruses, or even a cold. Over the holidays, 250 people were sickened at a Mormon missionary training center in Utah, but the culprit turned out to be a norovirus, not the flu.
Flu is a major contributor, though, to what's going on.
"I'd say 75 percent," said Dr. Dan Surdam, head of the emergency department at Cheyenne Regional Medical Center, Wyoming's largest hospital. The 17-bed ER saw its busiest day ever last week, with 166 visitors.
The early onslaught has resulted in a spike in hospitalizations, prompting hospitals to take steps to deal with the influx and protect other patients from getting sick, including restricting visits from children, requiring family members to wear masks, and banning anyone with flu symptoms from maternity wards.
One hospital in Allentown, Pa., this week set up a tent for a steady stream of patients with flu symptoms.
But so far, "what we're seeing is a typical flu season," said Terry Burger, director of infection control and prevention for the hospital, Lehigh Valley Hospital-Cedar Crest.
On Wednesday, Boston declared a public health emergency, and all the flu activity has caused some to question whether this year's flu shot is working.
There's a new flu vaccine each year, based on the best guess of what flu viruses will be strongest that year. This year's vaccine is well-matched to what's going around. The government estimates that between a third and a half of Americans have gotten the vaccine.
But the vaccine isn't foolproof, and even those who were vaccinated can still get sick. At best, the vaccine may be only 75 percent effective in younger people and even less so in the elderly and people with weak immune systems.
Health officials are analyzing the vaccine's effectiveness, but early indications are that about 60 percent of all vaccinated people have been protected from the flu. That's in line with how effective flu vaccines have been in other years.
In New York City, 57-year-old Judith Quinones suffered her worst case of flu-like illness in years, laid up for nearly a month with fever and body aches. "I just couldn't function," she said.
She decided to skip getting a flu shot last fall. But her daughter got the shot. "And she got sick twice," Quinones said.
On average, about 24,000 Americans die each flu season, according to the CDC.
Flu usually peaks in midwinter. Symptoms can include fever, cough, runny nose, head and body aches and fatigue. Some people also suffer vomiting and diarrhea, and some develop pneumonia or other severe complications.
Most people with flu have a mild illness and can help themselves and protect others by staying home and resting. But people with severe symptoms should see a doctor. They may be given antiviral drugs or other medications to ease symptoms.
The last bad flu season involved a swine flu that hit in two waves in the spring and fall of 2009. But that was considered a unique strain, different from the regular winter flu.
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Online:
CDC flu: http://www.cdc.gov/flu/index.htm
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