Health officials in San Luis Obispo County are investigating two human cases of H1N2v influenza to determine whether they are linked to a case of influenza in a pig.

At this time, several patients have tested positive for an influenza virus that may be different from viruses that commonly circulate among people during the annual flu season.

The Public Health Department has confirmed that two recent cases of the flu in San Luis Obispo County are variant influenza A (H1N2v) infections, a type of flu that spreads among pigs.