Causes of conjunctivitis. Causes of conjunctivitis include: Bacterial or viral infection. Infection with a virus that may also cause a fever and sore throat. Sexually transmitted infections (STIs), including chlamydia and gonorrhoea. Irritants such as chlorine from swimming pools, shampoo, smoke, fumes or a loose eyelash.
India is on track to become the worldâs most populous nation in less than a decade â or six years earlier than previously thought, according to the U.N. With 1.38 billion people compared with Indiaâs 1.31 billion, China is currently the worldâs most populous country. Figures for both countries are expected to swell to around 1.4 billion by 2022, at which point Indiaâs population is likely to expand beyond Chinaâs.
Surprisingly, none of China's cities make the list of the top 30 most densely populated cities in the world, most of which are in India, the Philippines, France and other countries. Macau, however, is the 36th most densely populated city with a density of 18,568 people per square kilometer (48,092 per square mile).he density figures change dramatically when you look at the largest urban areas, however. Shanghai, the largest city in the country and the world, has a population density of 3,700 people per square kilometer, or 9,700 people per square mile.