COVID-19 rules for travelers will vary depending on the destination. But testing positive for the virus could result in an unexpected change in plans, such as being required to stay isolated in a hoteI. The U.S. Centers for Disease Control and Prevention warns that travelers going overseas should make contingency plans since they might have to stay longer than planned if they test positive. Travel companies suggest getting insurance that covers the cost of recovery or isolation. Travelers who end up needing medical treatment are advised to check with their embassy for suggested health care providers.