Health officials have seen an uptick in cases of a new strain of swine flu in humans.
The H1N1 virus, also known as swine flu, may have killed as many as 17,000 Americans, according to new estimates by the Centers for Disease Control and Prevention (CDC) in Atlanta.
CNN's Elizabeth Cohen looks H1N1, health care reform and other health headlines that dominated in 2009.
It was the year that a new pandemic flu swept across the globe, initially baffling health authorities and causing worldwide panic.
Sean Cononie bounded out of the back of an ambulance ahead of most of the other volunteers. A bullhorn in his hand, he was, in a sense, the pied piper.
Restrictions limiting the H1N1 flu vaccine to high-risk groups could be lifted in many U.S. states now that production of the vaccine has increased, state health officials said Monday.
Saudis take serious measures to prevent the spread of swine flu during the Hajj. CNN's Isha Sesay reports.
A preliminary report suggesting that N95 respirators -- filtering devices worn over the mouth and nose -- protect against swine flu better than surgical face masks seems to be incorrect, researchers revealed during a meeting of the Infectious Diseases Society of America (IDSA).
The H1N1 virus has now become the dominant influenza virus around the globe, with high levels and an increase of activity in many regions, the World Health Organization said Thursday.
A UK health agency has warned footballers to stop their "disgusting" habit of spitting as it could lead to the spread of the H1N1 virus.
Nearly one-third, or 28 percent, of adults and children hospitalized with H1N1, also known as swine flu, have asthma. That's more than any other chronic condition, according to a recent analysis of cases published in the New England Journal of Medicine.
Swine flu vaccines are rolling out this month -- finally. Health-care workers in Indiana and Tennessee were the first to get the nose-spray version, while New Yorkers clamoring for the H1N1 vaccine finally had their chance too.
CNN's John Vause updates China's efforts to vaccinate its people against H1N1.
A mass H1N1 immunization program began in the UK Wednesday, with the country's health minister urging all priority groups to take up the vaccine.
New York public health workers will no longer be required to be vaccinated against both the seasonal and H1N1 flu virus, state officials announced Thursday, prompted by a vaccine shortage.
Demand for hand sanitizer has gone through the roof since the first cases of swine flu broke out earlier this year, and some makers of the germ-fighting gels are scrambling to keep up.
How much more virulent is the swine flu than the regular seasonal flu? Kitty Pilgrim reports.
Students will learn about the H1N1 virus (commonly known as swine flu) and research why officials are concerned about the H1N1 pandemic. Students will also learn about the measures that are being taken by international, federal and local health authorities to prevent the spread of colds and the flu and a possible outbreak of influenza.
Britain begins efforts to vaccinate millions of people against H1N1. ITN's Rags Martel reports.
An analysis of the sickest swine flu patients in Australia, Canada, Mexico, and New Zealand suggests that relatively healthy adolescents and young adults are among the most likely to get very sick after an H1N1 infection, a pattern similar to that seen in the 1918 influenza pandemic.
HHS Secretary Kathleen Sebelius and CNN's Dr. Sanjay Gupta talk about confusion surrounding the H1N1 vaccine.
For 13-year-old Brandon Marti, the intranasal vaccine felt "good," "cold" and "watery" at the Children's Hospital at Montefiore in the Bronx, New York, on Tuesday.
The swine flu vaccine is almost here. The question now is, will you get one? CNN's Elizabeth Cohen gets answers.
Next week, the long-awaited H1N1 vaccine is expected to arrive. At least three of the four vaccine makers have begun shipping their products to undisclosed distribution centers.
The United States stepped up preparations for a possible swine flu epidemic, and Canada confirmed its first cases on Sunday as researchers worked to determine how contagious the virus could be.
Tracy Wilkinson of the Los Angeles Times reports on the Mexican government's efforts to contain the swine flu outbreak.
Meet a pregnant woman who signed up to test the new swine flu vaccine. CNN's Elizabeth Cohen reports.
CNN's Emily Chang reports cases of swine flu in China are accelerating as the country begins vaccinations.
Every day, tens of thousands of fertilized hen eggs are delivered to Sinovac laboratories in Beijing. Each egg is infected with the H1N1 virus, then incubated for three days. White-coated employees examine every egg individually before the virus is extracted and used to make a vaccine.
An outbreak of flu at Washington State University shows few signs of slowing down as more students report symptoms suspected of being from the H1N1 virus, school officials said Thursday.
Federal authorities said Tuesday that health care providers could consider simply watching for flu symptoms in some individuals rather than prescribing preventive antiviral drugs right away if a person has been exposed to the flu.
An outbreak of flu at Washington State University showed few signs of slowing down as more students continued to report symptoms suspected of being from the H1N1 virus, school officials said Wednesday.
CNN's Dr. Sanjay Gupta talks to HHS secretary Sebelius about hospital preparedness for an H1N1 flu outbreak.
Over this past week, I had some interesting conversations with colleagues who are also health care professionals. These conversations usually start with, "You know what I hate about the media ... ?"
A White House panel estimates 90,000 people could die from swine flu. CNN's Elizabeth Cohen reports.
The H1N1 flu virus could cause up to 90,000 U.S. deaths, mainly among children and young adults, if it resurges this fall as expected, according to a report released Monday by a presidential advisory panel.
The Obama administration Wednesday urged employers to adopt "flexible and non-punitive" sick-leave policies as it released new guidelines for containing the spread of the H1N1 virus in the coming flu season.
Even 6-year-olds at Hamilton Central School in central New York came to school prepared for swine flu. Jessica Poyer, a first-grade teacher, noticed in the spring that kids had begun bringing their own hand sanitizer, tissues and water bottles.
More than 1,100 people worldwide have died from swine flu since it emerged in Mexico and the U.S. in April, according to the latest figures from the World Health Organization.
A federal advisory committee issued sweeping guidelines Wednesday for a vaccination campaign against the pandemic swine flu strain, identifying more than half the U.S. population as targets for the first round of vaccinations.
Costa Rican President Oscar Arias has been diagnosed with the H1N1 virus, commonly known as the swine flu, the government said in a televised statement on Tuesday.
A group of U.S. students touring China are gaining an experience they had not expected -- a second round in quarantine following a positive test of the H1N1 flu virus, a chaperone for the group said.
Days after the U.S. government announced upcoming trials for an H1N1 flu vaccine, Saint Louis University has been inundated with phone calls and e-mails from people volunteering for the study.
An international youth camp in western Norway is being shut down after swine flu broke out among the teenagers, the organizers, 4H Norway, announced Saturday.
There were 100,000 new cases of swine flu in England last week, nearly double the number from the previous seven days, authorities announced Friday.
CNN's Zain Verjee asks London taxi drivers what they think about the threat of the H1N1 virus.
Australia starts vaccine trials for the H1N1 virus. SBS's Jenny Lavelle reports.
Sales of the flu drug Relenza shot up 1,900 percent from a year ago as governments around the world stockpiled in preparation for a swine flu pandemic, drugmaker GlaxoSmithKline said Wednesday.
The first human trials of a swine flu vaccine are expected to start in Australia Wednesday, as the World Health Organization confirmed that more than 700 people had died from the virus worldwide.
An infant girl delivered prematurely from her mother, who has the swine flu virus, has died, hospital officials said Monday.
British airlines have put into effect measures to stop people with swine flu boarding flights in a bid to prevent the virus from spreading further.
The UK now has the third highest number of cases worldwide, after the U.S. and Mexico, according from the British government data.
Health and Human Services Secretary Kathleen Sebelius told government leaders at a swine flu preparedness summit Thursday that a vaccine to fight the H1N1 virus should be ready for distribution in mid-October.
Mainland China reported its first case of swine flu -- a 30-year-old man "currently enrolled in a university in the United States," the country's ministry of health said.
The number of Internet scammers offering fake anti-swine flu drug Tamiflu has surpassed those selling counterfeit Viagra, a UK body said Friday.
Australia's Aboriginal people are at greater risk from the H1N1 virus, the country's health minister has warned.
A nine-year-old girl has died in Britain from the H1N1 virus, commonly known as swine flu, as authorities reported a jump in the number of cases in the country.
Travelers to China who display flu-like symptoms may be randomly quarantined over concerns of the swine flu virus, the U.S. State Department warned.
A person with swine flu died in Scotland on Sunday, the government announced, marking the first known death of a swine flu patient outside of the Americas, according to the latest World Health Organization information.
The number of swine flu cases is closer to reaching 30,000, the World Health Organization reported Friday, a day after declaring the start of a global pandemic.
CNN's Dr. Sanjay Gupta provides a close-up view of the anxiety inside and outside one of Mexico City's biggest hospitals.
The World Health Organization has raised its pandemic alert level in response to the outbreak of swine flu that originated in Mexico.
China quarantines New Orleans Mayor Ray Nagin after a fellow airline passenger shows symptoms consistent with the H1N1 virus.
The mayor of New Orleans, Louisiana, has been quarantined in China after possible exposure to the H1N1 virus, his office said Sunday.
Mets people insist that center field star Carlos Beltran and starting pitcher John Maine do not have swine flu or any of several symptoms of the virus in the wake of a swine flu scare involving another member of the Mets' traveling party.
A group of students and teachers from a Maryland private school have been quarantined in China because of swine flu concerns, a school spokeswoman said Thursday.
The Centers for Disease Control and Prevention received a candidate vaccine virus for swine flu from one institution Friday, spokesman Thomas Skinner said in an e-mail.
A Utah man with chronic health problems died Wednesday from complications associated with swine flu, a local health official said. If confirmed, it would be the ninth U.S. fatality associated with the flu outbreak.
The number of confirmed H1N1 flu cases worldwide surpassed 10,000, the World Health Organization said Tuesday.
The U.S. death toll from swine flu rises to seven, and more schools are closing. CNN's Kitty Pilgrim reports.
Public health officials are seeing a number of outbreaks of swine flu at schools nationwide, but closing those schools may not always be the best public health measure, a federal scientist said Tuesday.
Larry King talks with the husband of the first U.S. victim of the H1N1 virus, known as swine flu, about his wife's death.
Health officials say the H1N1 virus, commonly known as the swine flu, is likely to cause more illnesses and deaths in the United States, even though much of the initial anxiety has eased.
CNN's Mary Snow has the latest on a possible swine flu death.
The number of confirmed H1N1 flu cases worldwide is nearing 10,000, the World Health Organization said Tuesday morning.
A new national poll indicates that only one in six Americans is worried that someone in the family will get the H1N1 flu.
An assistant principal who died after being hospitalized with the H1N1 virus did have an underlying condition, the New York City's health commissioner said Monday.
An assistant principal at a school in Jamaica Estates becomes the first H1N1 death in New York
Five new cases of the H1N1 virus in New York City schools will force three schools to close for a week, Mayor Michael Bloomberg said at a news conference Thursday evening.
As cases of swine flu spark global concern, Dr. Gupta travels to Mexico City, the epicenter of this outbreak.
Hotel guests are relieved to be freed after being quarantined due to the swine flu outbreak. CNN's Pauline Chiou reports
The World Health Organization on Saturday reported 3,440 confirmed cases of swine flu in 29 countries, with 48 deaths from the sickness.
The World Health Organization on Friday reported 2,500 confirmed cases of swine flu in 25 countries, with 44 deaths from the disease.
Both people who died of swine flu in the United States had pre-existing health problems, federal health authorities said Thursday in a report.
With mostly mild cases of swine flu in the United States, swine flu fears are lessening. But viruses have a way of re-appearing. While nobody has a crystal ball, here are some thoughts about what the 2009 H1N1 virus might do in the months to come.
While investigators trudge through pig farms and remote villages in Mexico, searching for clues about the new swine flu, answers about the virus' origin may finally appear on a computer, based on genetic codes.
Anderson Cooper and panelists discuss the latest on the swine flu virus spreading throughout the world.
More than a week after the swine flu outbreak rattled the world, with cases of infected people popping up from Mexico to South Korea, the new virus strain has shown up in a herd of swine.
Three wild boars were put to sleep in Iraq on Friday because of swine flu fears, a zoo official said.
More than a week after the swine flu outbreak rattled the world, with cases of infected people popping up from Mexico to South Korea, the new virus strain has shown up in a herd of swine.
Mexican officials focus on a young boy confirmed to be infected with swine flu in Mexico. CNN's Dr. Sanjay Gupta reports.
Tucked away in this small mountain village, off a dusty road flanked by pig farms, is where the earliest case of swine flu -- a virus spreading globally -- was confirmed.
The World Health Organization raised the swine flu alert to level five Wednesday indicating it fears a pandemic is imminent.

