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WASHINGTON, April 9-- While existing evidence shows African Americans have higher rates of COVID-19 infection and morality in the United States, a leading epidemiologist told Xinhua on Thursday that underlying health conditions and higher chances of exposure to virus environment may contribute to the problem. U.S. President Donald Trump said earlier this week his administration is actively engaging on the disease's increased impacts on the African American community, and doing everything to address this challenge. "It's been disproportional," Trump said, adding he is very concerned about the terrible numbers of infected African Americans. Zhang Zuofeng, professor of epidemiology, and also associate dean for research at the School of Public Health of the University of California, Los Angeles, told Xinhua that African Americans have higher rates of chronic diseases, including cardiovascular diseases and obesity, which may be a main reason for why they had higher rates of COVID-19 infection and mortality. Moreover, compared with other ethnic groups, more African Americans are working in positions with higher chances of exposure to COVID-19, such as workers and cleaners in health care facilities, and bus drivers, which made them more easily to get infected, Zhang said. Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, said higher rates of pre-existing conditions, such as diabetes, hypertension, obesity and asthma, within black and minority communities, may contribute to the phenomenon, as well as their higher use of public transportation. | 
