What is a viral respiratory disease of zoonotic origin caused by the SARS coronavirus, that was researched by a Chinese virologist who, in 2014, was ranked as 11th in the world by Thomson Reuters?
Yi Guan Yi Guan is a Chinese virologist who, in 2014, was ranked as 11th in the world by Thomson Reuters (now known as Clarivate Analytics) among global researchers in the field of microbiology. His research on the viral respiratory disease SARS allowed the Chinese government to successfully avert the 2004 outbreak of this disease. He is the current Director (China affairs) of the State Key Laboratory for Emerging Infectious Diseases University of Hong Kong. In early 2017, Guan warned that the H7N9 influenza virus "poses the greatest threat to humanity than any other in the past 100 years."
Dengue fever outbreaks As of 2010 dengue fever is believed to infect 50 to 100 million people worldwide a year with 1/2 million life-threatening infections. It dramatically increased in frequency between 1960 and 2010, by 30 fold. This increase is believed to be due to a combination of urbanization, population growth, increased international travel, and global warming. The geographical distribution is around the equator with 70% of the total 2.5 billion people living in endemic areas from Asia and the Pacific. Many people in outbreaks are not virally tested, therefore their infections may also be due to chikungunya, a coinfection of both, or even other similar viruses.