Yes, they do. Though people younger than 65 are much less likely to die from COVID-19, they can get sick enough from the disease to require hospitalization. According to a report published in the CDC’s Morbidity and Mortality Weekly Report (MMWR) in late March, nearly 40% of people hospitalized for COVID-19 between mid-February and mid-March were between the ages of 20 and 54. Drilling further down by age, MMWR reported that 20% of hospitalized patients and 12% of COVID-19 patients in ICUs were between the ages of 20 and 44.
People of any age should take preventive health measures like frequent hand washing, physical distancing, and wearing a mask when going out in public, to help protect themselves and to reduce the chances of spreading the infection to others.
Source: Harvard Medical School, USA