Zombie Movie question (flick from the 80’s)?

Question by tinyavenger: Zombie Movie question (flick from the 80’s)?
(Someone else posted this question on another forum and we can not figure out the answer and are hoping someone here does.)
It’s along the lines of “Night of the Comet”. Female guard working in a lab making biological weapons that accidentally unleashes something that turns people to zombies. Lab locks down as everyone turns but the woman. Her hubby is outside trying to get to her, which he eventually does, and they barricade themselves inside a lab with a doctor to figure out a cure (he is also starting to show signs of turning) Figures out she is pregnant which is why she isn’t turning and is able to save the three of them with her blood.
Any ideas???

Best answer:

Answer by Fright Film Fan
…you’re talking about the 1985 sci-fi horror chiller, “Warning Sign”….

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