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An Overview of Swine Flu

Swine flu or influenza is a condition caused by strains of subtypes of Influenza A virus called H1N1, H1N2, H3N1, H3N2, and H3N3. These viruses are common in pigs located in midwestern United States, Canada, South America, Mexico, Mainland China, Japan, Taiwan, Europe, and other Eastern Asian countries.

Transmission of influenza virus from swine to humans is relatively uncommon and does not always result to human influenza but often leads to production of antibodies in the blood. When properly cooked, pig meat does not have the potential of passing the virus. Transmission that leads to human influenza is called zoonotic swine flu.

People who work with pigs, particularly those with direct exposure, are at greater risk of being infected with swine flu. Towards the middle of the 20th century, identification of influenza subtypes became likely paving the way for an accurate diagnosis of transmission to humans. Since then, 50 infections have been confirmed and recorded.

It is rare for these strains of swine flu to be transmitted from one human to another. In humans, the symptoms of swine flu are similar to common influenza as well as influenza-like illness such as chills, sore throat, fever, coughing, muscular pains, severe headache, and general discomfort.
The 2009 swine flu outbreak in humans was caused by a new strain of influenza A virus subtype H1N1 which have genes that closely resemble swine influenza. The root of this new strain is not known. According to the World Health Organization for Animal Health, this new strain has not been isolated in pigs. It is capable of human-to-human transmission and manifests the normal symptoms of influenza.

Swine can be infected with human influenza such as the case of the 1918 flu pandemic and the 2009 flu outbreak. Swine flu was first proposed as a disease associated with humans during the 1918 flu pandemic. During that time, pigs became simultaneously sick with humans.

Influenza virus as a cause of disease in pigs was first identified in 1930. For the next six decades, strains of swine influenza became almost exclusively H1N1. From 1997 to 2002, new strains of three varied subtypes and 5 different genotypes were identified as the cause of influenza among pigs in North America.

From 1997-1998, H3N2 strains developed. They included genes acquired through reassortment of human, avian, and swine viruses and have been a principal cause of wine influenza in North America. Reassortment between H1N1 and H3N2 resulted to the development of H1N2. In Canada, a strain of H4N6 resulted from the reassortment of avian and swine flu but was isolated on a single farm.

The H1N1 variant of swine flu is one of the descendants of the strain that brought about the 1918 flu pandemic. While persisting in pigs, the descendants of the 1918 virus have also been transmitted throughout the 20th century which resulted to the usual seasonal influenza outbreaks.
It is interesting to note that direct infection from pigs to humans is rare, with only 12 confirmed cases in the United States since 2005.

However, since the influenza strains remain in the pigs after they have disappeared in the human population can make these pigs a reservoir where the influenza virus could survive and later on transmitted to humans as soon as their immunity to the strain is no longe effective.

Swine flu has been recorded as zoonosis in humans several times, oftentimes with limited distribution and rarely with massive distribution. Swine outbreaks are common and can lead to significant economic losses in the industry, mainly leading to stunting and expanded market time. Swine influneza, for instance, the British meat industry has experienced 65 million of losses annually.

You And The Swine Flu: Knowledge That May Save You

With this new strain of influenza running around, properly called Type A H1N1 swine influenza, but more popularly known as the swine flu, I think it would be nice to give people the 411 on the latest medical emergency that’s got the world’s attention.

Swine influenza came from pigs, hence the name, and pigs usually have regular outbreaks of this disease. The problem with it this time is that this strain of influenza has managed to jump the species and went over to us Homo sapiens and cased a bit of havoc.

Pigs don’t have to worry about it because most of them have built-in resistances to the diseases, mostly because of the constant evolutionary exposure to the disease. They like us when we receive the flu: a few chills, sniffles and a bit of bed rest and we’re right as rain. Problem with that is us humans don’t have this resistance to swine flu, mostly because we’re not pigs. The pigs would be in the same boat if a human strain had jumped into the porcine population.

The other problem with it is its virulence. The Center For Disease Control have determined that this strain of swine flu is contagious and can be passed to other people through the normal vectors: the virus can be transmitted when someone touches something that is contaminated and the puts it in his eyes, nose, or mout. It’s even airborne as microscopic droplets can travel through the air when someone sneezes. The CDC, however, is still a bit hazy on some other factors like incubation time and much contact is too much contact.

Another problem is that the swine flu has the same symptoms as regular human flu, just worse by an order of magnitude. High fever, cough, sore throat, body aches, headaches, chills and fatigue can either mean you’ve been hit by the ordinary human flu and should take the usual cures or maybe you have the swine flu and need to go to the doctor immediately. Personally, it would be better to take no chances and just go to the doctor. Diarrhea and vomiting are the big warning signs though. Death by flue isn’t direct though. It just compounds with other diseases like pneumonia and makes it even worse. It can also kick any existing medical conditions you have like asthma up a notch.

So, the question on your mind now probably is: is there no hope or should I just run to the hills to avoid human contact? Thankfully, you don’t have to go that far. The CDC has recommended the use of several medicines to treat yourself with and to prevent the spread of the disease. Oseltamivir and zanamivir are viral inhibitors that make sure that the virus does not reproduce. More common antiviral drugs that are bought over the counter can also be effective. They make the symptoms milder and help your body heal itself faster. They can also stop some of the higher level complications that can happen when you are infected, if you take them early enough.

Of course, an ounce of prevention is better than a pound of cure. To avoid getting infected, try to avoid close contact with sick people and wash your hands on a regular basis, especially before you eat. If you have the unfrotunate luck of getting sick, isolate yourself and check your symptoms. Immediately consult with your doctor if your sickness persists more than usual.

The swine flu is just the latest in a long line of diseases that have endangered the human race. No matter how frightening it is, it’s still pretty survivable. All you need to have is the right knowledge to win the battle.

Swine Flu: Overview, Treatment, and Prevention

Swine flu is an illness that is affecting hundreds of individuals in the United States as well as worldwide. According to the CDC, the illness may take some more time. Since one is likely to become infected with the condition, they need to understand swine flu symptoms in order for them to obtain proper treatment or medicaion.

The Symptoms

The symptoms of H1N1 infection is similar to that of seasonal flu. Among the symptoms include cough, sore throat, running or stuffy nose, chills and fatigue, to name just a few. Several people infected with the virus have complained of diarrhea and vomiting. The high risk groups prone to H1N1 is not yet known at the moment but it is likely that they are similar to those suffering from seasonal influenza.

People at greater risk of serious side effects from seasonal flu include people more than 65 years old, children below 5 years old, pregnant women, and people with chronic medical consitions as well as those who are taking immunosuppressive medications or with HIV infection.

Avoid Social Contact

If you are feeling sick, your condition may last for more than a week. You should remain at home and refrain from making social contact. As much as possible, you should not communicate with other people to avoid the spread of the virus.

At the moment, the CDC believes that H1N1 has similar properties on the aspect of transmission with seasonal flu virus. If you go out of the house to consult your doctor, wear a mask or use a tissue when coughing or sneezing.

According to recent studies, people suffering from seasonal flu are at risk to transmit the disease a day prior to development of symptoms for up to seven days after getting sick.

Children are more likely to be at risk for a longer period of time so it is best to consult a healthcare provider.

Emergency Warning Signs

If you suddenly become sick and experience any of the following warning signs, this is your cue to seek emergency medical assistance.

In the case of children becoming ill due to H1N1infection, the following warning signs may require immediate medical attention:

* Fast or difficulty in breathing
* Bluish or gray colored skin
* Insufficient amount of liquids
* Severe or continuous vomiting
* Lack of sleep or interaction
* Irritability
* Recovery from flu-like symptoms but the symptoms come back with fever and worse coughing

Among adults, the following emergency warning signs demand immediate medical attention:

* Trouble with breathing or shortness of breath
* Abdominal pains or pressure in the chest
* The individual suddenly becomes dizzy
* The patient is confused
* Severe or continuous vomiting
* Recovery from flu-like symptoms but the symptoms come back with fever and worse coughing

Prevention Is The Best Treatment

You can do your part in preventing the spread of the H1N1 virus. Here are some tips on how you can take part in efforts for preventing the spread of infection.

* Be aware. Obtain information about H1N1 by visiting the website of the CDC.

* Use a tissue in covering your mouth and nose when sneezing. Afterwards, throw the tissue in the trash.

* With soap and water, wash your hands after coughing or sneezing. If possible, use alcohol-based sanitizers.

* Refrain from touching your nose or mouth as this could lead to easy transmission of germs.

By being aware of swine flu symptoms, the spread of the H1N1 virus would easily be prevented.

Pneumonia in Children

Pneumonia is the infection of the either one lung or both. When both the lungs get infected it is known as double pneumonia. When the pneumonia is mild enough that the visit to the doctor can be avoided and the child can carry out daily activities normally, it is known as walking pneumonia.

The lungs are an important part of the respiratory system. The air which is breathed in contains oxygen, which is filtered by the lungs. This oxygen then is carried around the body with the help of blood which is passed from the breathing tubes by the alveoli. Capillaries or the minute blood vessels are surrounded by small air sacs known as alveoli. There are over six hundred million alveoli in the human body. The air which is taken in is supplied to the alveoli; the oxygen extracted from the air is dissolved in the blood. Then it is the job of the red blood cells to distribute the oxygen to all the body parts. Oxygen is vital in the proper functioning of the human body and insufficient supply of oxygen can damage the organs and sometimes can be life threatening. This functioning is disturbed when the lungs get infected by pneumonia.

Pneumonia does not allow the lungs to function properly, because the infection produces fluid which obstructs the alveoli. In turn the oxygen does not penetrate deep inside the lungs and lesser oxygen is supplied to the blood. The breathing is affected and the condition worsens when both the lungs get infected with pneumonia.

People of all ages from infants to old could get affected with pneumonia. It is a myth among people that getting wet makes the person catch pneumonia. But it is actually the virus or the bacteria which causes the infection. When a person infected with flu or cold faces a deterioration in his/her condition, he/she can be infected with pneumonia. This happens because the irritation caused by the flu or cold helps the pneumonia germs to get into the lungs easily and move around to spread the infection.

The virus or bacteria which cause pneumonia can cause damages, whose severity can depend on the health of the child. If the infection is caused by bacteria, the child will get sick very soon and can get high temperature fever accompanied with chills. Pneumonia caused by virus develops very slowly and it takes longer time to go away. The child can also experiences cough, chest pain, headache, and or muscle ache. It can also make it difficult to breath, so the child will start to breath faster which may make him cough out gloppy mucus. The child would have to totally abstain from eating.

When given the right treatment, the child can recover fully. The doctor will first examine the heartbeat and breathing with the help of the stethoscope. The stethoscope also helps to check the lungs, the sounds made by the lungs help to determine if it contains any fluids. Sounds such as crackling or bubbling are indications of pneumonia. Chest X-ray will be taken too. White patchy area will show fluid buildup. By looking at the X-ray, the doctor can also determine whether the infection is caused by bacteria or virus. If it is caused by bacteria, antibiotics will be prescribed. And if it is difficult for the child to swallow the medicine or to retain it inside, he/she will be injected with IV fluid. And if virus is responsible for the infection, antibiotics wont work. Fever reducers, along with cough medicine, will be given in this case. The medicines will be of no use, if the child doesnt take adequate rest and plenty of liquids.

Shots can be taken to prevent pneumonia. These series of shots are called pneumococcal. Regular flu shots can also prove helpful, especially for kids who have asthma or other kinds of lung infection. Rest and sleep also strengthens the immune system. Washing hands regularly can keep harmful germs at bay.

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