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.
The current 2016 estimate, based on United Nations projections, is just over 1.4 billion. India, the next largest country, has 120 million fewer people, for a population of 1.28 billion. The United States, the third largest country in the world, has a much smaller population of 323 million. Estimates show that India will pass China as the most populous nation in the world by 2022. Unfortunately, there isnât a really simple answer to the question of how many people live in China.