Under-testing remains a huge problem in the sprawling South American country, but AI is helping fill the gap, thanks to a system called RadVid-19 developed using algorithms from German company Siemens and Chinese firm Huawei. Brazil has been hit harder by the pandemic than any country except the United States, with nearly 2.8 million infections and 95,000 deaths. Experts say the numbers would be much higher if there were more widespread testing. RadVid-19 seeks to fill that gap, and help doctors decide the right course of treatment for their patients. It analyzes chest X-rays and CT scans to find spots on patients' lungs that are likely markers of infection by the new coronavirus.