The hospital found the bacteria could remain undetected for weeks and be transmitted in complex ways.
When this condition is fulfilled, light at these specific wavelengths will build up inside the cavity and be transmitted out the back end for specific wavelengths.
This system, called Argus II, allows visual signals to bypass the damaged portion of the retina and be transmitted to the brain.
The Asian H3N2 virus is derived from an avian strain that also gained the ability to infect dogs and be transmitted from dog to dog.
The pathogen can also survive in and be transmitted by infected seed, such that fungicidal seed treatment can reduce the chances for introducing the pathogen into new fields.
That system, which was approved by the Food and Drug Administration in February, allows visual signals to bypass a damaged retina and be transmitted to the brain.
These select for M.tb strains more fit to cause disease and be transmitted, sometimes by exploiting defence systems effective on other bacteria.
Unlike malaria, which follows mosquito vectors, or AIDS, which spreads by sexual or blood contact, TB can circle the world at the speed of a passenger jet and be transmitted by a single cough.
Dr Jeremy Farrar, director of the Wellcome Trust, said: "This new research shows that Ebola virus can persist in the semen and be transmitted sexually many months after the original infection has disappeared.
"It will still be more solid than open," said the architect Peter Samton, "but there will be bits of light that can come in during the day and be transmitted out at night".
At about the same time, a well-known virologist at the University of Wisconsin — Madison showed that a Chinese H7N9 strain could both kill ferrets and be transmitted between them.
