Thousands of active duty sailors and Marines remain unvaccinated following Sunday’s deadline, putting their military careers, and their health, at risk as a new variant raises global concern.

The Navy and Marine Corps are the second and third service to reach their vaccine mandate deadline for active-duty personnel since Defense Secretary Lloyd Austin directed the services on Aug. 24 to fully immunize their personnel. The Air Force deadline was Nov. 2; active duty soldiers have until Dec. 15 to be fully vaccinated.

As of Monday, 92 percent of Marines are fully vaccinated and 95 percent have at least one shot, leaving about 9,000 people without any vaccine immunity. The numbers for the Navy are 96.3 percent fully vaxxed, 97.2 percent partially vaxxed, leaving about 9,500 sailors with no vaccine immunity.

Meanwhile, the Navy has lowered its official vaccination rate after discovering errors in their data. On Nov. 24, officials reported a fully-vaxxed rate of 97 percent and a partially vaccinated rate of 99.8 percent.