evidence: The Centers for Disease Control and Prevention has reported 938 COVID-19 cases and 29 deaths across 38 states and Washington, D.C., as of Wednesday. [...] Flattening the curve slows the infection rate, leaving healthcare systems better placed to treat people, which can save lives. Containment efforts, such as banning large gatherings and encouraging people to limit their exposure to others, are crucial parts of the process. [...] That's the advice the World Health Organization (WHO) issued Wednesday as it reiterated that respiratory viruses like the new coronavirus can be passed by shaking hands and touching one's eyes, nose and mouth.