The Centers for Disease Control and Prevention (CDC) announced Wednesday that Americans will be forced to wear masks on public transportation for at least two more weeks.

The agency said the Transportation Security Administration (TSA) will extend the mask mandate security directive for 15 more days, through May 3, in a press release. The mandate, which requires travelers to wear masks on airplanes, trains and other forms of public transit, was set to expire April 18.

The CDC cited an uptick in COVID-19 cases since the start of April and the spread of the BA.2 subvariant of Omicron as justification for extending the mandate. Deaths and hospitalizations have decreased during that timeframe, according to the CDC’s own data.