here is one website I found:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.wrongdiagnosis.com/t/tuberculosis/contagious.htm
">http://www.wrongdiagnosis.com/...ulosis/contagious.htm
</a>
Here may be why your brother isn't concerned -- is says:
People who have been treated with appropriate drugs for at least two weeks usually are not infectious.
Airborne droplet transmission; not clothing or bedding; not handshakes, toilet seats, food utensils or other contact; rarely from contaminated beef or milk (bovine tuberculosis).
Contagious overall?: Yes
Contagious by droplet?: Yes
Contagious airborne?: Yes
Contagious from food?: Yes, rarely.
Contagious by physical contact (non-sexual)?: No
Contagious by handshake?: No
Contagious from bedding?: No
Contagious from clothing?: No
Contagious from toilet seats?: No
TB is primarily an airborne disease. The disease is not likely to be transmitted through personal items belonging to those with TB, such as clothing, bedding, or other items they have touched. Adequate ventilation is the most important measure to prevent the transmission of TB.
Because most infected people expel relatively few bacilli, transmission of TB usually occurs only after prolonged exposure to someone with active TB. On average, people have a 50 percent chance of becoming infected with TB if they spend eight hours a day for six months or 24 hours a day for two months working or living with someone with active TB, researchers have estimated.
There is more -- go to the page
<a target=_blank class=ftalternatingbarlinklarge href="http://www.wrongdiagnosis.com/t/tuberculosis/contagious.htm
">http://www.wrongdiagnosis.com/...ulosis/contagious.htm
</a>
Here may be why your brother isn't concerned -- is says:
People who have been treated with appropriate drugs for at least two weeks usually are not infectious.
Airborne droplet transmission; not clothing or bedding; not handshakes, toilet seats, food utensils or other contact; rarely from contaminated beef or milk (bovine tuberculosis).
Contagious overall?: Yes
Contagious by droplet?: Yes
Contagious airborne?: Yes
Contagious from food?: Yes, rarely.
Contagious by physical contact (non-sexual)?: No
Contagious by handshake?: No
Contagious from bedding?: No
Contagious from clothing?: No
Contagious from toilet seats?: No
TB is primarily an airborne disease. The disease is not likely to be transmitted through personal items belonging to those with TB, such as clothing, bedding, or other items they have touched. Adequate ventilation is the most important measure to prevent the transmission of TB.
Because most infected people expel relatively few bacilli, transmission of TB usually occurs only after prolonged exposure to someone with active TB. On average, people have a 50 percent chance of becoming infected with TB if they spend eight hours a day for six months or 24 hours a day for two months working or living with someone with active TB, researchers have estimated.
There is more -- go to the page