Sentence examples for more dangerous strains from inspiring English sources

That flu strain, named for where it originated, is one of the more dangerous strains.

But authorities fear that if a SARS-like disease is emerging in summer, many other and possibly more dangerous strains of pneumonia-like diseases could emerge in the cooler weather.

But the country cannot tell which cases are susceptible to which antibiotics, meaning more dangerous strains could push out strains that are easier to kill, as has happened in Russia and Peru.

Ironically, increased virulence would make it even more important to vaccinate everyone, he says, because universal vaccination would prevent the more dangerous strains from harming anyone.

Although the one-two punch of the combination therapy can still cure patients, allowing the parasites to survive an extra day or two leaves the therapy "very vulnerable for further development of resistance," he says, which could lead to even more dangerous strains.

This is a common occurrence with influenza viruses: there is a tendency for pathogenic viruses to become less lethal with time, as the hosts of more dangerous strains tend to die out.

If the virus had mutated into a much more dangerous strain, it would make the egg-based vaccine useless, and it could also force Iversen to start over.

But scientists still hope to keep it from spreading in pigs, which can act as "mixing vessels" for human and avian flus, possibly leading to a more dangerous strain.

But in recent years, fires like the one that engulfed the Granite Mountain Hotshots have become more frequent and more dangerous, straining the men on the front line and the logistical infrastructure that stands behind them.

Cats' vulnerability to H5N1--which comes on the heels of similar findings in pigs--increases concerns that the virus may evolve into a more dangerous strain that could set off an influenza pandemic.

An effective ban on experiments that make viruses more dangerous than natural strains could be lifted in the US if senior experts reach an agreement on strict new measures to oversee the work this week.