2 Die in China of H7N9 Bird Flu Lesser known strain of H5N1; no signs human are transmitting it By Polly Davis Doig, Newser Staff Posted Mar 31, 2013 8:36 AM CDT 11 comments Comments A man holds a cage with bird at a bird market on Thursday, Nov. 18, 2010. (AP Photo/Kin Cheung) (Newser) – China is downplaying the deaths of two men in Shanghai from the less known H7N9 strain of bird flu, claiming that there are thus far no signs of human-to-human transmission. A woman is also in critical condition in a nearby province, though the AP notes that none of the 88 people in close contact with the three victims show signs of infection. The WHO says it's "closely monitoring the situation," and "transmission of the virus appears to be inefficient, therefore the risk to public health would appear to be low." H7N9 is considered a "low pathogenic strain," notes the AP.