For example, a flu strain is a certain biological form of the influenza or flu virus.

H7N9 is a bird flu strain of the species Influenza virus A (avian influenza virus or bird flu virus).

The H1N1 form of swine flu is one of the descendants of the strain that caused the 1918 flu pandemic.

Many references to bird flu and H5N1 in the popular media refer to this strain.

A bird adapted strain of H5N1, called HPAI A(H5N1) for highly pathogenic avian influenza virus of type A of subtype H5N1, is the highly pathogenic causative agent of H5N1 flu, commonly known as avian influenza ( bird flu ).

Strain

As variable as flu is, HIV makes flu look like the Rock of Gibraltar.

We tried it against flu A viruses H1N1, H3N2 as well as flu B viruses.

Swine Flu for Grownups

And that most people who die of regular flu which in regular flu years is about 360,000 people worldwide, most of them senior citizens and they die not of the flu but because the flu gives an assault to their immune system.

Who Pays for Bird Flu?

Special event on Avian flu

I was vaccinated against the flu.

The nurse gave Tom a flu shot.

Laurie Garrett on lessons from the 1918 flu

Seth Berkley HIV and flu the vaccine strategy

So today, we get our flu vaccines from ...

Special event on the theme of Avian flu

This relationship, however, is not always without strain.

It was before the avian flu had reached Europe.

1918 Spanish flu pandemic When the 1918 Spanish flu pandemic reached Toronto, Earhart was engaged in arduous nursing duties including night shifts at the Spadina Military Hospital.

And we've looked at everything more AIDS cases, flu, etc.

Sami is also in the hospital with flu like symptoms.

The flu also revealed some of Mexico s other fundamental flaws.

Yet freedom of speech in the West is under strain.

The Russian strain of political messianism is pretty much exhausted.

It's been working to help control pandemic flu, SARS for example.

But when the United States caught the financial flu, others followed.

Some scientists today predict a repeat of an avian flu pandemic.

For example, additional letters may be added to indicate a strain.

When a new flu infects one human being, all are at risk.

And actually, about a year or so ago, there was this promulgation of the idea of Google Flu Trends, with respect to the flu, where by looking at people's searching behavior today, we could know where the flu what the status of the epidemic was today, what's the prevalence of the epidemic today.

Griffith concluded that the type II R had been transformed into the lethal III S strain by a transforming principle that was somehow part of the dead III S strain bacteria.

For example, refugees leaving Sudan can strain the stability of neighboring Chad.

Prolonged periods of strain tend to weaken the fabric of institutional cooperation.

You blind guides, who strain out a gnat, and swallow a camel!

Ye blind guides, which strain at a gnat, and swallow a camel.

But AIDS jumped from monkeys and several types of flu jumped from swine.

(In 1918, avian flu killed more people than died in World War I).

Still in Lebanon, QifaNabki brushes off swine flu as a smaller concern, noting

I'm very sorry if you have the flu, I know it's horrible, but we're not going to spend billions of dollars trying to reduce the duration of your flu symptoms by half a day.

Only time will tell. Swine flu, as bird flu before it, may turn out to be a non issue. If it does not, however, it good that people are starting to think about it now.

To what extent the EU can take this strain, only time will tell.

The immense response by central banks and finance ministries has eased the strain.

Under tremendous strain, Tymoshenko s government succeeded in keeping the budget deficit under control.