Right At Your Door (2006).

It's straight out of the George Romero school of cheap cinema.

Largely off screen somewhat obscure catastrophe... CHECK.

Small group of characters played by well chosen unknowns... CHECK

Self initiated barricading of a single location... CHECK

Child in peril... CHECK

Emergency Broadcast... CHECK

The only problem is that it lacks the genre film get out clause.

It's clearly a post 9/11 War On Terror paranoia piece.

The catastrophe isn't zombies or an inhibition lifting toxin (probably) it seems to be some kind of bio terrorism (or is that a cover story??).

Anyway it doesn't really work largely because of the lack of a gimmick. The actors give it their all but if you have seen one of these sort of films you have seen them all.

At least When The Wind Blows (1989) was beautifully animated.

3 reels of Gaffer Tape