Yosemite National Park authorities have reportedly become more alert after six confirmed cases of rare Hantavirus pulmonary syndrome (HPS) were identified last week. The individuals who contracted the virus were informed to have stayed at the 'Signature Tent' in the park during the month of June.

The National Park Service Office of Public Health has collaborated with Centers for Disease Control and Prevention (CDC) to spread more awareness regarding the disease amongst the public. Moreover, they have formally written to all those who stayed in the same insulated, double wall tent cabins during the same time.

The people contacted have been requested to get their check-ups done to assure that there is no problem.

It has been revealed that 3,000 visitors stayed in the tents. It is being suspected that the carrier of the virus, deer mice, would have easily moved between the walls.

However, it has been affirmed that those of who stayed in the hotel rooms and campgrounds, are not under threats. The National Park Service has confirmed that there have been no concerning issues regarding Ahwahnee Hotel and the Wawona Hotel.

Arizona, Colorado and New Mexico have been listed out as the major areas, which have been affected by the virus.