1900 & tuberculosis: Why would a parent die and his 5 children & spouse not?

Was it typical for the disease to only affect 1 person within a household?
Answers:
You can be exposed to TB and not procure it. You can get it and not ever have symptoms (just be a carrier) or have symptoms years next. You can get it and have non-typical symptoms, and so die of it years later next to out the doctors of the time ever realizing that you had it. You can have symptoms, but your body can barney it off and you can go into remission. There are too many variables too predict accurately, but it does seem to be very unlikely that the entire rest of the family would never get it at adjectives, as it is a bacteria transmitted through the air.

is 1900?
tuberculosis affects a person when his body resistance lowers ie weakens.
if u have resistance within ur body u will not be affected
if in the early stages TB have a very good treatment and its curable in overdue stages also. may be he was having some other problem also and combined effect is death

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