Context: People with prolonged, frequent, or close contact with people with TB are at particularly high risk of becoming infected, with an estimated 22% infection rate. A person with active but untreated tuberculosis may infect 10–15 (or more) other people per year. Transmission should occur from only people with active TB – those with latent infection are not thought to be contagious. The probability of transmission from one person to another depends upon several factors, including the number of infectious droplets expelled by the carrier, the effectiveness of ventilation, the duration of exposure, the virulence of the M. tuberculosis strain, the level of immunity in the uninfected person, and others. The cascade of person-to-person spread can be circumvented by segregating those with active ("overt") TB and putting them on anti-TB drug regimens. After about two weeks of effective treatment, subjects with nonresistant active infections generally do not remain contagious to others. If someone does become infected, it typically takes three to four weeks before the newly infected person becomes infectious enough to transmit the disease to others.

Question: If you're around someone with active TB, what's the chance you'll contract it expressed as a percentage?
Answer: 22%

Question: Left untreated, about how many people could contract tuberculosis from an active TB patient in a year?
Answer: 10–15

Question: About how long will a TB patient receiving effective treatment stay contagious?
Answer: two weeks

Question: If you contracted tuberculosis today, what's the estimated gestation period before you could spread the infection to others?
Answer: three to four weeks

Question: What term is interchangeable with "active" when talking about tuberculosis infection?
Answer: overt

Question: What is the infection rate for people not in close contact with TB?
Answer: Unanswerable

Question: How many people does a person whose TB is being treated infect per year?
Answer: Unanswerable

Question: Which type of TB is more infectious than active TB?
Answer: Unanswerable

Question: Uninfected people are treated with what regimens?
Answer: Unanswerable

Question: How long is someone contagious if they are recently infected?
Answer: Unanswerable