Signs and symptoms. The majority of HPV infections do not cause symptoms or disease and resolve spontaneously. However, persistent infection with specific types of HPV (most frequently types 16 and 18) may lead to precancerous lesions.
1. Tokyo, Japan: Tokyo tops the list and remains the world's largest city with 38 million dwellers. Though the UN has predicted a decline in the city's population, it will still remain the world's most populous city in 2030 with 37 million inhabitants. 2. Delhi, India: With 25 million, the Indian capital is the second-most populated city in the world.
Karachi is the largest and most populous city in Pakistan.In 2014, Karachi has an estimated population of more than 23.7 million, which makes it the third-largest city in the world by population. Karachi has a population density of over 24,000 people per square kilometer, or 63,000 per square mile.