Swiss scientists reveal the mechanism responsible for aging hidden deep within mitochondria—and dramatically slow it down in worms by administering antibiotics to the young.
Medical research May 22, 2013 | 4.9 / 5 (12) | 2 |
(Medical Xpress)—Recent scientific papers from China suggest a vigilant watch should be kept on the development of bird flu viruses, as a new strain has been identified and previously known viruses have ...
Diseases, Conditions, Syndromes May 03, 2013 | 3 / 5 (2) | 1 |
A known difficulty in fighting influenza (flu) is the ability of the flu viruses to mutate and thus evade various medications that were previously found to be effective. Researchers at the Hebrew University of Jerusalem have ...
Diseases, Conditions, Syndromes 12 hours ago | 4 / 5 (1) | 0 |
The level of immunity to the recently circulating H7N9 influenza virus in an urban and rural population in Vietnam is very low, according to the first population level study to examine human immunity to the virus, which was ...
Diseases, Conditions, Syndromes May 21, 2013 | 5 / 5 (1) | 0 |
Scientists at the University of California, Davis, detected the H1N1 (2009) virus in free-ranging northern elephant seals off the central California coast a year after the human pandemic began, according ...
Diseases, Conditions, Syndromes May 15, 2013 | not rated yet | 1 |
(Medical Xpress)—The newest public health threat in Africa, scientists have found, is coming from a previously unknown source: the banded mongoose. Leptospirosis, the disease is called. And the banded mongoose ...
Diseases, Conditions, Syndromes May 14, 2013 | not rated yet | 0 |
Pregnant mothers' exposure to the flu was associated with a nearly fourfold increased risk that their child would develop bipolar disorder in adulthood, in a study funded by the National Institutes of Health. The findings ...
Psychology & Psychiatry May 14, 2013 | not rated yet | 0 |
Researchers have identified the dose of dengue virus in human blood that is required to infect mosquitoes when they bite. Mosquitoes are essential for transmitting the virus between people so the findings have important implications ...
Diseases, Conditions, Syndromes May 13, 2013 | not rated yet | 0 |
Two respiratory viruses in different parts of the world have captured the attention of global health officials—a novel coronavirus in the Middle East and a new bird flu spreading in China.
Diseases, Conditions, Syndromes May 13, 2013 | 5 / 5 (2) | 0
In the summer of 1968, a new strain of influenza appeared in Hong Kong. This strain, known as H3N2, spread around the globe and eventually killed an estimated 1 million people.
Diseases, Conditions, Syndromes May 10, 2013 | not rated yet | 0 |
(HealthDay)—Women who come down with the flu during pregnancy may be at increased risk of having a child who develops bipolar disorder, a new study suggests.
Psychology & Psychiatry May 08, 2013 | 5 / 5 (1) | 0 |
Scientists said Wednesday that flu infections were rising among pigs raised for slaughter on farms in south and southeastern China, also plagued by bird flu.
Diseases, Conditions, Syndromes May 07, 2013 | 5 / 5 (2) | 0
Live poultry markets can act as hotbeds for H5N1 bird flu, but simple measures such as disinfecting trucks, equipment and market space could help stop the virus from spreading, researchers said Monday.
Diseases, Conditions, Syndromes May 06, 2013 | 5 / 5 (1) | 0
An experimental drug has shown promise in treating influenza, preventing lung injury and death from the virus in preclinical studies, according to University of Maryland School of Medicine researchers publishing in the journal ...
Diseases, Conditions, Syndromes May 01, 2013 | 4.3 / 5 (3) | 0 |
A new virus that causes severe breathing distress and kidney failure elicits a distinctive airway cell response to allow it to multiply. Scientists studying the Human Coronavirus-Erasmus Medical Center, which ...
Diseases, Conditions, Syndromes Apr 30, 2013 | 5 / 5 (1) | 0 |
Influenza, commonly referred to as the flu, is an infectious disease caused by RNA viruses of the family Orthomyxoviridae (the influenza viruses), that affects birds and mammals. The most common symptoms of the disease are chills, fever, sore throat, muscle pains, severe headache, coughing, weakness/fatigue and general discomfort. Although it is often confused with other influenza-like illnesses, especially the common cold, influenza is a more severe disease than the common cold and is caused by a different type of virus. Influenza may produce nausea and vomiting, particularly in children, but these symptoms are more common in the unrelated gastroenteritis, which is sometimes, inaccurately, referred to as "stomach flu." Flu can occasionally cause either direct viral pneumonia or secondary bacterial pneumonia.
Typically, influenza is transmitted through the air by coughs or sneezes, creating aerosols containing the virus. Influenza can also be transmitted by direct contact with bird droppings or nasal secretions, or through contact with contaminated surfaces. Airborne aerosols have been thought to cause most infections, although which means of transmission is most important is not absolutely clear. Influenza viruses can be inactivated by sunlight, disinfectants and detergents. As the virus can be inactivated by soap, frequent hand washing reduces the risk of infection.
Influenza spreads around the world in seasonal epidemics, resulting in the deaths of between &10000000000250000000000250,000 and &10000000000500000000000500,000 people every year, up to millions in some pandemic years. On average 41,400 people died each year in the United States between 1979 and 2001 from influenza. In 2010 the Centers for Disease Control and Prevention (CDC) in the United States changed the way it reports the 30 year estimates for deaths. Now they are reported as a range from a low of about 3,300 deaths to a high of 49,000 per year.
Three influenza pandemics occurred in the 20th century and killed tens of millions of people, with each of these pandemics being caused by the appearance of a new strain of the virus in humans. Often, these new strains appear when an existing flu virus spreads to humans from other animal species, or when an existing human strain picks up new genes from a virus that usually infects birds or pigs. An avian strain named H5N1 raised the concern of a new influenza pandemic, after it emerged in Asia in the 1990s, but it has not evolved to a form that spreads easily between people. In April 2009 a novel flu strain evolved that combined genes from human, pig, and bird flu, initially dubbed "swine flu" and also known as influenza A/H1N1, emerged in Mexico, the United States, and several other nations. The World Health Organization officially declared the outbreak to be a pandemic on June 11, 2009 (see 2009 flu pandemic). The WHO's declaration of a pandemic level 6 was an indication of spread, not severity, the strain actually having a lower mortality rate than common flu outbreaks.
Vaccinations against influenza are usually made available to people in developed countries. Farmed poultry is often vaccinated to avoid decimation of the flocks. The most common human vaccine is the trivalent influenza vaccine (TIV) that contains purified and inactivated antigens against three viral strains. Typically, this vaccine includes material from two influenza A virus subtypes and one influenza B virus strain. The TIV carries no risk of transmitting the disease, and it has very low reactivity. A vaccine formulated for one year may be ineffective in the following year, since the influenza virus evolves rapidly, and new strains quickly replace the older ones. Antiviral drugs such as the neuraminidase inhibitor oseltamivir can be used to treat influenza, however the effectiveness is difficult to determine due to much of the data remaining unpublished.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Latest Spotlight News
(Medical Xpress)—Regulating the distribution of power in neurons is done by a system that makes the national electric grid look simple by comparison. Each neuron has several thousand mitochondria confined ...
6 hours ago | 4.8 / 5 (5) | 0 |
Teams of highly respected Alzheimer's researchers failed to replicate what appeared to be breakthrough results for the treatment of this brain disease when they were published last year in the journal Science.
9 hours ago | 5 / 5 (1) | 2 |
A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose ...
11 hours ago | 4.9 / 5 (8) | 0 |
Scientists at the National Institutes of Health report they have discovered in mouse studies that a small molecule released in the spinal cord triggers a process that is later experienced in the brain as ...
9 hours ago | 5 / 5 (2) | 0 |
Little is known about why asthma develops, how it constricts the airway or why response to treatments varies between patients. Now, a team of researchers at Weill Cornell Medical College, Columbia University Medical Center ...
10 hours ago | not rated yet | 0 |
Ethnic background plays a surprisingly large role in how diabetes develops on a cellular level, according to two new studies led by researchers at the Stanford University School of Medicine.
7 hours ago | not rated yet | 0 |
By discovering the new mechanism by which estrogen suppresses lipid synthesis in the liver, UC Irvine endocrinologists have revealed a potential new approach toward treating certain liver diseases.
7 hours ago | not rated yet | 0 |
Even while being dragged to its destruction inside a cell, a cancer-promoting growth factor receptor fires away, sending signals that thwart the development of tumor-suppressing microRNAs (miRNAs) before it's dissolved, researchers ...
7 hours ago | not rated yet | 0 |
Chinese and U.S. scientists have used virus isolated from a person who died from H7N9 avian influenza infection to determine whether the virus could infect and be transmitted between ferrets. Ferrets are often used as a mammalian ...
8 hours ago | not rated yet | 0 |
Cinnamon: Can the red-brown spice with the unmistakable fragrance and variety of uses offer an important benefit? The common baking spice might hold the key to delaying the onset of –– or warding off ...
7 hours ago | 5 / 5 (4) | 0 |