China is leapfrogging the U.S. in using AI in medicine. These five companies are leading the way

In the race to deploy artificial intelligence in medicine, China has surged ahead of the U.S. and other countries, spawning technology companies that are using algorithms and novel software tools to help treat millions of patients and relieve pressure on the country’s overwhelmed hospital system.

One company, WeDoctor, uses a combination of AI and telemedicine to conduct 90,000 online consultations a day and screen patients for cancer and chronic diseases. No company with anywhere near such reach exists in the U.S.