Posts Tagged ‘flu’
Bird flu goes airborne after modification
A story in the New York Times reports that scientists are learning that avian flu has acquired airborne transmission ability after it was modified for increased strength. The experiments were part of studies to learn how the virus behaves. Now this virus can survive in the nose of ferrets, mammals whose nostril temperature is 4 degrees C cooler than a bird’s gut, where H5N1 usually grows.
The article points out that there’s a difference in ferret noses and those of us higher order mammals. One point cannot be smoothed out, however. The crossover point of animal to human is a step closer after this discovery. That kind of crossover is a prospect for triggering a pandemic.
Humans wait at the end of the virus growth chain
Flu has been with humans for thousands of years, but the rise of arboviruses sparks an era of desperate disease, a battle we are losing. These arboviruses—named after the arthropod mosquitoes, fleas and ticks bearing them—have skipped the virus trademark of preserving a human host. The arboviruses prefer reservoir hosts, birds which don’t catch the virus and only carry it. They enter the bird, whose blood kicks up the virulence a notch. The bird then offers up a more deadly virus to the bug’s next vector, the mosquito. Once a human is infected, the virulence is turned up beyond our natural immunity. This is one spark that heats up the world of 2018, when the trouble begins in Viral Times.