Now, thanks to the penguin research, there is another strain of interest: H11N2. The team took swabs from the trachea or the rectum of Adélie Penguins and then attempted to identify the presence of any influenza strains. Previous research in King Penguins revealed no presence of any influenza so the samples were expected to be negative. Yet, in some 2% of the birds tested, the virus was found. With further genetic testing, the strain was elucidated although this offered more concerns.