Health Tips

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.

Symptoms of Arthritis
John Robben

Symptoms of Arthritis

In a previous article, we discussed what Arthritis is and its
many forms, now it is time to take a look at the symptoms of
Arthritis. Arthritis shows up in various ways. Some of the first
symptoms include things like knees cracking when you stand up,
general pain or swelling around joints that lasts for more than
two weeks, you may also notice that pain in your joints
increases as you move, also you may notice increased stiffness
in your joints when you wake up in the morning, and your joints
may appear red and feel warm to the touch.

Some other symptoms of Arthritis include fever, a sense of
feeling tired all the time, even a feeling that you have the
flu. If you experience any of these symptoms, it is imperative
that you see your doctor or physician at once. Only a doctor can
truly diagnose whether you have Arthritis, and because there are
over 100 forms of Arthritis, it is also important to determine
which form of Arthritis you have. The different forms of
Arthritis have different symptoms as well. It is also important
to seek medical treatment as soon as possible, since Arthritis
has no known cure, the sooner you seek treatment and begin a
regimen of care, and the better your results of managing your
Arthritis will be. Your treatment plan may include things such
as a specific course of medicine, plenty of rest, adequate diet,
and proper nutrition, losing weight if you are overweight, and
in severe cases, surgery may be required. In future articles we
will look at treatment options, from Acupuncture to Zinc.

Is it Rheumatoid Arthritis or Osteoarthritis?

We’ve discussed that there are over 100 forms of Arthritis. The
most common forms are Osteoarthritis, Rheumatoid Arthritis, and
Gout. All of these forms have different symptoms and require
testing by your physician for an accurate diagnosis. Here are
some of the symptoms and differences between Rheumatoid
Arthritis and Osteoarthritis.

Symptoms of Osteoarthritis:

Osteoarthritis Typically begins in one Joint Osteoarthritis
Typically affects only the Joints Osteoarthritis does not
affect Internal Organs Osteoarthritis affects Cartilage
Osteoarthritis causes Stiffness in the Joints when waking in the
Morning Osteoarthritis is a Result of Wear and Tear on the body

Osteoarthritis is a result of cartilage being broke down. As
this takes place, the bones rub together. This typically happens
in the knees, hips, hands, and spine. Unfortunately, when the
pain sets in there has already been a substantial loss and
damage to the cartilage.

Rheumatoid Arthritis has different symptoms than Osteoarthritis.
Here are the symptoms of Rheumatoid Arthritis. Symptoms of
Rheumatoid Arthritis

Extreme Tiredness and Fatigue Low Grade Fever Muscle Pain
and Aches Appetite Loss Painful and Swollen Joints Redness
and Heat at the Joint Site

Typically, Rheumatoid Arthritis affects the joint of the body in
a symmetrical fashion. Rheumatoid Arthritis is a systematic
disease and it often affects other organs in the body, and not
just joints.

The symptoms of Rheumatoid Arthritis often appear, and then
enter a state of remission. There is no proven reason as to the
exact cause of Rheumatoid Arthritis, however it has been
suspected that bacteria, fungi, and infections may cause it.
There has also been evidence that Rheumatoid Arthritis is a
hereditary condition. It is also believed that certain triggers,
such as poor nutrition, stress, and infection can bring on
Rheumatoid Arthritis.

Stay tuned for our next article, “Osteoarthritis: Cause and
Treatments”.

About the author:
Written by John
Robben of Ultimate Water Massage, Inc. Providing Massage
Services and Pain Relief products. Visit our Arthritis Information
Center