I just wanted to update this thread to say that I survived the night and managed to avoid this bug unscathed this morning. :)
However, during the night(1-4am), there was a time when I thought I was going to get sick. I felt unsteady and my stomach was gurgling. However, this morning I woke-up good as new.
As for the rest of the family, they are in full swing. Those who started first have now concluded vomiting, but remain sick. As for the other two, they started vomiting this morning around 5 and 7am. And so, as the only none-sick member, I guess that makes me the dedicated caregiver. :)