Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Sunlight Sensitivity. 

While in sunlight, the zombie has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Claw. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 2 (1d4) slashing damage.

Contagious. When attacked, opponent rolls constitution saving throw (DC 10) or becomes infected with Burning Plague disease.

Anyone coming into contact with a monster or item that has been noted as contagious must make an immediate DC 10 Constitution save or become infected. After the first 24 hours, an infected creature is poisoned. Every 24 hours thereafter, the infected creature makes another DC 10 Constitution save. If the creature fails a second save, they are poisoned and have disadvantage on saving throws. If the creature fails a third save, their Constitution drops to 1, and they will die in 24 hours unless cured. If an infected creature succeeds on three saves, they are cured.