Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Distraction
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Undershoot; Deviation / Discrepancy - Procedural Clearance
General None Reported / Taken
Environment - Non Weather Related; Human Factors
We were cleared to cross ZZZZZ at FL 300. I entered 30;000 into the altitude window and verified LNAV; VNAV and VNAV PATH. I also checked that there was a TOD on the MFD. The aircraft did not descend via the entered criteria and we missed the altitude by 1;140 feet.[I was] distracted by the mandated vaccine that I have to get now. [I need to] pay more attention.
Air carrier Captain reported an altitude deviation during descent and cited distraction due to the vaccine mandate being a contributing factor.