An estimated one in five adults, 18–64 years old, who had COVID-19 previously will develop at least one persistent symptom related to the infection, a CDC analysis found. Now, new treatment guidelines recognize that patients with long COVID-19 could be at risk for heart disease. The guidance recommends that physicians carefully screen patients for potential cardiovascular complications following long COVID-19. Even patients who are not at high risk for heart disease or complications may be at risk for future health problems, the guidance says.