The H1N1 virus that caused that pandemic is now a regular human flu virus and continues to circulate seasonally worldwide. The English language content on this website is being archived for historic and reference purposes only. For current, updated information on seasonal flu, including information about H1N1, see the CDC Seasonal Flu website.
Is Spanish influenza still around?
In fact, the influenza strain that causes the Spanish flu has remained with us, becoming the agent responsible for our routine winter illnesses. It is benign, compared to its deadly 1918 form. We are, of course, still susceptible to flu viruses. In the last 10 years, the annual death rate from flu has ranged from 12,000 to 61,000.
Where did H1N1 start?
The swine-origin influenza A (H1N1) virus that appeared in 2009 and was first found in human beings in Mexico, is a reassortant with at least three parents. Six of the genes are closest in sequence to those of H1N2 'triple-reassortant' influenza viruses isolated from pigs in North America around 1999-2000.
What are symptoms of H1N1?
Symptoms of H1N1 in adults
- Fever. Fever is a common symptom of the flu. ...
- Sore throat. This is another common symptom, similar to swine flu and the regular flu. ...
- Congested or runny nose. You are very likely to get a runny nose when you get the flu. ...
- Headache. This is one of the most common symptoms of any flu. ...
- Cough. ...
- Fatigue. ...
- Chills. ...
- Body ache. ...
- Diarrhea. ...
- Loss of appetite. ...
What happened to H1N1 virus?
- The rollout of the H1N1 or swine flu vaccine in 2009 was plagued by shortages and miscommunication.
- These problems led to a drop in public confidence.
- Experts hope lessons learned from the H1N1 vaccine rollout are applied to the COVID-19 vaccine.
Is H1N1 still around in 2021?
Drop in H1N1 cases continues in 2021 after hitting 4-year low in 2020.
Is the H1N1 swine flu still around?
The A/H1N1pdm09 virus is now one of the seasonal flu viruses that circulate each winter. If you've had flu in the last few years, there's a chance it was caused by this virus. As many people now have some level of immunity to the A/H1N1pdm09 virus, it's much less of a concern than it was during 2009 to 2010.
Is swine flu still around 2022?
CDC Confirms First Human Infection with Flu Virus from Pigs During 2022. CDC.
Is H1N1 the same as the swine flu?
Overview. The H1N1 flu, commonly known as swine flu, is primarily caused by the H1N1 strain of the flu (influenza) virus. H1N1 is a type of influenza A virus, and H1N1 is one of several flu virus strains that can cause the seasonal flu. Symptoms of the H1N1 flu are the same as those of the seasonal flu.
Why is H1N1 called the swine flu?
Q: Why is H1N1 flu sometimes called “swine flu?” A: This virus was originally referred to as “swine flu” because laboratory testing showed that many of the genes in this new virus were very similar to influenza viruses that normally occur in pigs in North America.
How long is H1N1 contagious?
People with H1N1 influenza virus infection should be considered potentially contagious as long as they are symptomatic and possible for up to 7 days following illness onset. Children, especially younger children, might potentially be contagious for longer periods.
Is the bird flu coming in 2022?
Learn about 2022 detections of HPAI in Commercial and Backyard Flocks. Wild birds can be infected with HPAI and show no signs of illness. They can carry the disease to new areas when migrating, potentially exposing domestic poultry to the virus.
How do you cure H1N1?
Antiviral drugs are sometimes prescribed within the first day or two of symptoms. They can reduce the severity of symptoms and possibly the risk of complications....The U.S. Food and Drug Administration has approved these four drugs:Oseltamivir (Tamiflu)Zanamivir (Relenza)Peramivir (Rapivab)Baloxavir (Xofluza)
How do you test for swine flu?
To test for swine flu a nose or throat swab is taken. Within 15 minutes, the laboratory may tell if influenza type A or B is present. The specimen of the infected material from the patient's throat or nose is collected within the first 4 to 5 days of illness.
Is swine flu harmful to humans?
Swine flu viruses do not usually infect humans, but rare human infections have occurred. (For more information about swine influenza infections in humans, see Variant Influenza Viruses in Humans). Swine flu viruses can cause high levels of illness in pig herds, but cause few deaths in pigs.
What age group did H1N1 affect the most?
2009 H1N1 Pandemic Hits the Young Especially Hard This study estimated that 80% of 2009 H1N1 deaths were in people younger than 65 years of age which differs from typical seasonal influenza epidemics during which 80-90% of deaths are estimated to occur in people 65 years of age and older.
When did the swine flu start and end?
Between April 12, 2009, and April 10, 2010, the CDC estimates swine flu caused 60.8 million illnesses, 273,304 hospitalizations and 12,469 deaths in the U.S. 6.
What age group did H1N1 affect the most?
2009 H1N1 Pandemic Hits the Young Especially Hard This study estimated that 80% of 2009 H1N1 deaths were in people younger than 65 years of age which differs from typical seasonal influenza epidemics during which 80-90% of deaths are estimated to occur in people 65 years of age and older.
What is H1N1 stand for?
H1N1 influenza (Swine flu)
How do you cure H1N1?
Antiviral drugs are sometimes prescribed within the first day or two of symptoms. They can reduce the severity of symptoms and possibly the risk of complications....The U.S. Food and Drug Administration has approved these four drugs:Oseltamivir (Tamiflu)Zanamivir (Relenza)Peramivir (Rapivab)Baloxavir (Xofluza)
Why was H1N1 in 2009?
Still, even in a good year, it is important to remember that a lot of people die with the flu, including a lot of kids. And most of them are unvaccinated.
What is the best protection against the flu?
So while it might be interesting to talk about which flu virus strain is going around, just remember that your best protection against that strain is a yearly flu vaccine.
Is H1N1 seasonal or seasonal?
The new virus also led to patterns of death and illness not normally seen in influenza infections. The H1N1 (2009) virus continues to circulate as a seasonal virus and is included in the vaccines against seasonal influenza. Emergency List. Influenza (avian and other zoonotic) Influenza seasonal.
Is H1N1 a virus?
Before the H1N1 pandemic in 2009, the influenza A (H1N1) virus had never been identified as a cause of infections in people. Genetic analyses of this virus have shown that it originated from animal influenza viruses and is unrelated to the human seasonal H1N1 viruses that have been in general circulation among people since 1977.
What are the health conditions that H1N1 has caused?
This includes pregnancy, diabetes, heart disease, asthma and kidney disease. In one study, fifty-seven percent of children who had been hospitalized as a result of 2009 H1N1 have had one or more “higher risk” medical conditions.
How did the 2009 H1N1 virus spread?
Flu viruses are spread mainly from person to person through coughing, sneezing or talking by people with influenza. Sometimes people may become infected by touching something – such as a surface or object – with flu viruses on it and then touching their mouth or nose.
What is the 2009 H1N1?
What is 2009 H1N1 (swine flu)? 2009 H1N1 (sometimes called “swine flu”) is a new influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009.
What are the symptoms of the 2009 H1N1 virus?
The symptoms of 2009 H1N1 flu virus in people include fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills and fatigue. Some people may have vomiting and diarrhea. People may be infected with the flu, including 2009 H1N1 and have respiratory symptoms without a fever.
How many people die from the flu each year?
Seasonal influenza can cause mild to severe illness, and at times can lead to death. Each year, in the United States, on average 36,000 people die from flu-related complications and more than 200,000 people are hospitalized from flu-related causes.
What are the complications of H1N1?
This includes pregnancy, diabetes, heart disease, asthma and kidney disease.
What are the risks of seasonal flu?
In seasonal flu, certain people are at “high risk” of serious complications. This includes people 65 years and older, children younger than five years old, pregnant women, and people of any age with certain chronic medical conditions. More than 70 percent of adults who have been hospitalized with the 2009 H1N1 virus have had one or more medical conditions previously recognized as placing people at “higher risk” of serious seasonal flu-related complications. This includes pregnancy, diabetes, heart disease, asthma and kidney disease. In one study, fifty-seven percent of children who had been hospitalized as a result of 2009 H1N1 have had one or more “higher risk” medical conditions.
What are the three main types of influenza viruses that are spread in pigs?
There are three main groups of influenza viruses that commonly spread among pigs in the United States: H1N1, H1N2, and H3N2 viruses. These viruses have important antigenic and genetic differences from seasonal influenza A viruses that circulate worldwide among people. The two newest infections, one an H3N2 v virus and the other an H1N1 v virus, occurred in children. Neither child was hospitalized, and both have recovered or are recovering from their illness.
Can pigs get the flu?
Influenza viruses can spread from pigs to people and from people to pigs. Infected pigs can cough or sneeze and droplets with influenza virus in them can spread through the air. If these droplets land in your nose or mouth, or are inhaled, you can be infected. Pigs can be infected by avian influenza and human influenza viruses as well as swine influenza viruses. When influenza viruses from different species infect pigs, the viruses can reassort (i.e., swap genes) and new viruses that are a mix of swine, human and/or avian influenza viruses can emerge. This is thought to have happened in 2009 when a new H1N1 virus with genes of avian, swine and human origin emerged to cause a flu pandemic.
How long does it take to get H1N1?
People who have it can spread it one day before they have any symptoms and as many as 7 days after they get sick.
What antiviral is used for H1N1?
Some of the same antiviral drugs that are used to treat seasonal flu also work against H1N1 swine flu. Oseltamivir ( Tamiflu ), peramivir (Rapivab), and zanamivir (Relenza) seem to work best, although some kinds of swine flu don’t respond to oseltamivir. These drugs can help you get well faster.
How Do You Catch It?
The same way as the seasonal flu. When people who have it cough or sneeze, they spray tiny drops of the virus into the air. If you come in contact with these drops, touch a surface (like a doorknob or sink) where the drops landed, or touch something an infected person has recently touched, you can catch H1N1 swine flu.
How to get rid of the flu?
Either way, it "teaches" your immune system to attack the real virus. Besides a flu shot, there are other things you can do to stay healthy: Wash your hands throughout the day with soap and water.
Can swine flu cause shortness of breath?
Like the regular flu, swine flu can lead to more serious problems including pneumonia, a lung infection, and other breathing problems. And it can make an illness like diabetes or asthma worse. If you have symptoms like shortness of breath, severe vomiting, pain in your belly or sides, dizziness, or confusion, call your doctor or 911 right away.
Where to test for swine flu?
To test for swine flu, your doctor runs a swab -- a bigger version of the ones in your bathroom -- up the inside of your nose around the back of your throat. But the test isn’t as common or widespread as those for regular flu. So the only people who really need to be tested are those in the hospital or those at high risk for life-threatening problems from swine flu, such as:
Can you catch swine flu from eating bacon?
Despite the name, you can't catch swine flu from eating bacon, ham, or any other pork product.
U.S. Virologic Surveillance
Influenza A (H3N2) viruses have been the most frequently detected influenza viruses this season. For regional and state level data and age group distribution, please visit FluView Interactive.
Influenza Virus Characterization
CDC performs genetic and antigenic characterization of U.S. viruses submitted from state and local public health laboratories using the Right Size Roadmap submission guidance.
Outpatient Respiratory Illness Surveillance
The U.S.
Long-term Care Facility (LTCF) Surveillance
LTCFs (e.g., nursing homes/skilled nursing, long-term care for the developmentally disabled, and assisted living facilities) from all 50 states and U.S. territories report data on influenza virus infections among residents through the National Healthcare Safety Network (NHSN) Long-term Care Facility Component.
Hospitalization Surveillance
The Influenza Hospitalization Surveillance Network (FluSurv-NET) conducts population-based surveillance for laboratory-confirmed influenza-related hospitalizations in select counties in 14 states and represents approximately 9% of the U.S. population. FluSurv-NET hospitalization data are preliminary.
Mortality Surveillance
Based on NCHS mortality surveillance data available on January 20, 2022, 25.5% of the deaths that occurred during the week ending January 15, 2022 (week 2), were due to pneumonia, influenza, and/or COVID-19 (PIC). This percentage is above the epidemic threshold of 7.1% for this week.
Additional National and International Influenza Surveillance Information
FluView Interactive: FluView includes enhanced web-based interactive applications that can provide dynamic visuals of the influenza data collected and analyzed by CDC.
2009 H1N1 Flu
- The signs and symptoms of flu caused by the H1N1 virus are similar to those of infections caused by other flu strains and can include: 1. Fever, but not always 2. Chills 3. Cough 4. Sore throat 5. Runny or stuffy nose 6. Watery, red eyes 7. Body aches 8. Headache 9. Fatigue 10. Diarrhea 11. …
2009 H1N1 Flu in Humans
Prevention & Treatment
Contamination & Cleaning
Exposures Not Thought to Spread 2009 H1N1 Flu
2009 H1N1 in Pets