This subtype virus was first discovered in 1960 in china. It was then discovered in Hong Kong as a direct transmission of the virus from birds to humans. Recent studies show that the wide spread statistics of the virus is reported over 60 countries in the world. Scientists have been on the look out to analyze whether the global climate change has any risk factors towards the widespread viral situation (Joan,138).
Different studies have been reported towards the virus highly pathogenic avian influenza viruses H5N1. Through understanding the causes of the condition mode of spread, findings can be concluded towards the effects of climate change as a risk factor. A number of studies will be analyzed here. Different years will be analyzed also. Data for the different continent spread is analyzed here through the periods when the global climatic effects were felt.
The disease influenza is caused by transmission of the virus from birds to humans. The predisposing risk factor is coming into contact with the virus. Research was done over the different continents from January 2004 to December 2009. Throughout this period, the epidemic waves are assessed.
Global warming that has enhanced the mosquito transmitting the virus to thrive in different continents. These have been felt largely in the northern America as well as Europe. The excessive heat during the early summer period has seen a huge outbreak of the disease. The mosquito transmits the bird in turn it enters the human systems.
The virus has been analyzed and seen to survive more effectively during the cold weather. This in turn leads to its wide spread during the winter and early summer. The global change in climate has cause a different trend in the movement of birds that carry the virus from Asia to other parts of the world.