Unlike cold viruses, which have been tested in humans, influenza is a potentially deadly virus.
But in Sarawak, East Malaysia, they may save youngsters from a deadly virus threatening the toddler population.
In Uganda's first recorded outbreak of Ebola , around 40 people are known to have died from the deadly virus.
President Obama downplayed the possibility of closing the U.S. border with Mexico, where the recent occurrence of the deadly virus began.
President Bush has decided that the United States does need to help Africa and the Caribbean in fighting this deadly virus, which has decimated populations there.
On January 18, 2009, a 27-year-old woman from eastern China died of bird flu, Chinese authorities said, making her the second person to die from the deadly virus at that time.
Zhao Qingchao, an official with the local government in Langfang City where the market is located, told Xinhua that they have taken steps to detect the source of the deadly virus.
Most people might expect to suffer some ill effects from attending the famous Oktoberfest beer festival in Munich - but not to contract a potentially deadly virus from being bitten on the leg.
The authorities appear to have learned the lessons of previous deadly virus outbreaks such as the H5N1 avian flu and Sars (Severe Acute Respiratory Syndrome), and this time around have been quick to share information with the WHO.
Caught up in a struggle to prevent a deadly virus from spreading around the globe, he wakes up in a daze in an Italian hospital at the start of the novel and spends the rest of the book trying to regain his bearings.
New York (CNN) -- Two more infants have contracted the herpes virus after undergoing an ultra-Orthodox Jewish type of circumcision, which has been linked to the spread of the potentially deadly virus to newborn boys, according to the New York City Health Department.
And now comes an outbreak of the deadly Ebola virus, the contagious and incurable fever that makes its victims bleed to death through their ears, nose, throat, everywhere.
Although the Philippines has escaped the worst of the deadly Sars respiratory virus, with only 12 cases and two deaths, thousands of Filipinos work in some of the hardest hit locations such as Hong Kong and Singapore.
The H7N9 strain has lead to the usual concerns about the virus causing a deadly influenza epidemic in China.
Yesterday, Japan and South Africa joined the list of countries with cases of the deadly pneumonia caused by the virus.
But the virus doesn't appear to notably sicken infected birds, unlike H5N1, another avian-flu virus that is deadly in birds and occasionally infects people.
It has already spread to the edges of the European Union: last month, the deadly H5N1 strain of the virus was confirmed in poultry in Turkey and Romania.
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The appearance of cases with mild or no symptoms in humans could make tracing even more difficult, but may also mean that many people infected do not get seriously ill and recover quickly, making the virus is less deadly than it appears.
However, one virus which may cause a problem is West Nile Virus, a potentially deadly condition which peaks in the US in August and September.
The most prolific and deadly zoonotic is HIV, the virus that causes AIDS. In 1999, scientists at the University of Alabama at Birmingham traced the origins of HIV back to a subspecies of chimpanzee.
The 1918 pandemic did its worst after the first human death between week 16 and week 26 after the second wave and where the virus had mutated into the deadly human-to-human mass killer.
No one yet knows where each virus came from, or how deadly each really is.
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Plans were hatched for how best to respond to the threat from a virus that is infecting poultry around the world and might trigger a deadly pandemic of human flu.
Since type A hepatitis is a virus, it cannot be treated with antibiotics, but it is rarely deadly, the health department said.
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