Over the past 30 years, the number and diversity of outbreaks have risen dramatically, from AIDS to Zika. This is driven by factors such as travel, population density, human displacement, deforestation, and climate change, says microbiologist and virologist Dr. Gagandeep Kang Over the past 30 years, the number and diversity of outbreaks have risen dramatically, from AIDS to Zika. This is driven by factors such as travel, population density, human displacement, deforestation, and climate change, says microbiologist and virologist Dr. Gagandeep Kang Bengaluru Health News, Wellbeing Tips, Diseases, Treatment and Nutrition | The Hindu