human to human transmission

Although human-to- human transmission cannot be ruled out , the search for a possible alternative source of exposure is continuing .

Of those, more than 150 have been fatal, but so far efficient human-to-human transmission has not occurred.

Avian influenza has remained a disease of the bird populations. So far there is no solid proof of efficient human to human transmission.

Human-to-human transmission by bite is theoretically possible but has never been confirmed.

"This type of close contact we know can result in human to human transmission sometimes, " he said.

It was a confirmed human to human transmission, but no further spread outside of the exposed family was documented or suspected.

Only a few instances of limited human-to-human transmission have been recorded.

If human-to-human transmission has occurred, it has not been either efficient or sustained.

In a news conference Wednesday, Mr. Feng played down the possibility of "effective" human-to-human transmission.

"Human to human transmission would be a catastrophic event, " she says.

There is no epidemiological link between these two cases that would indicate human-to-human transmission.

The possibility of limited human-to-human transmission cannot be ruled out at present.

Human-to-human transmission has also been documented, including in a hospital setting in India.

So far no human-to-human transmission of the virus has been reported.

All available evidence indicates that no sustained human-to-human transmission is occurring in any country experiencing human cases.

The preliminary risk assessment found no evidence of sustained or community human to human transmission.

All available evidence indicates that no sustained human-to-human transmission has occurred.

Cats may be involved in helping the virus to adapt to efficient human-to-human transmission.

The World Health Organisation says there's no evidence of sustained human to human transmission of swine flu beyond North America.

Secondary cases following human to human transmission have been reported in the past but they are very rare.

There is much discussion and planning under way about what should and could be done in the event of a human-to-human transmission.

By contrast, today's H1N1 variant has demonstrated a capacity for multi-generational human-to-human transmission.

China will close its borders if there is a single case of human-to-human transmission of bird flu in the country.

Human-to-human transmission of the virus was possible.

To date, Chinese authorities say they have found no evidence of human-to-human transmission.

I don't think that once we have human to human transmission, it's going to be possible to contain it.

Human-to-human transmission of avian flu is rare, but in some cases the virus has passed from poultry to humans.

There is no direct human-to-human transmission.

To date, no human-to-human transmission of Hendra virus has been documented.

Although the two cases are related and lived in the same neighbourhood, human-to-human transmission is considered unlikely.

From 2001 to 2008, around half of reported cases in Bangladesh were due to human-to-human transmission.

Reducing the risk of human-to-human transmission.

The alert stands at 3, meaning "No or very limited human-to-human transmission. "

What is the significance of limited human-to-human transmission?

Study on human case of avian influenza in Guangzhou 2006 without causing human-to-human transmission among close contacts

Human-to-human transmission of the avian flu