Articles, Blog

CDC Tuberculosis (TB) Transmission and Pathogenesis Video

August 29, 2019

Tuberculosis, also known as
TB, is spread through the air from one person to another. When someone with
pulmonary TB disease coughs, TB bacteria are expelled into
the air in tiny water droplets. These droplets can
remain floating in the air for several hours
making it possible for someone nearby
to inhale them. Once a person has
breathed in droplets that contain TB bacteria,
they travel down the trachea and enter the lungs where they
collect in the alveolar sacs. Once in the alveolar sacs, the
bacteria begin to multiply. The body’s immune system starts
working and macrophages begin to surround the bacteria. A granuloma is formed to keep
the bacteria from spreading. The TB bacteria remain in the
lungs, but the body is protected from disease by the
granuloma. In 8 to 10 weeks,
the person will most likely test positive for
latent TB Infection. The progression from latent TB
infection to TB disease occurs when the granuloma break open
and the TB bacteria multiply. Then the person becomes
sick with TB disease and may be infectious. This progression can occur
immediately after infection, many years later, or not at all. When the TB escapes
from the granuloma and begins destroying a person’s
lungs it’s called pulmonary TB. TB bacteria can also enter
the bloodstream and travel to other parts of the body
causing extrapulmonary TB


  • Reply It's Whatever Vibes May 15, 2015 at 4:14 am

    Interesting how it spreads and how the body works when it enters the system.

  • Reply Filipe MatosSilva May 15, 2015 at 8:00 am

    Interesting information

  • Reply Monika Bhuriya March 27, 2016 at 3:36 pm

    Interesting information very nice medam.thank you very much.

  • Reply Monika Bhuriya March 27, 2016 at 3:37 pm

    Very nice video medam.

  • Reply Elaminan Abualas July 17, 2016 at 7:05 am

    Very nice video medam.

  • Reply Fanie Britz July 22, 2017 at 8:57 am

    great stuff!!! thanx

  • Reply Ashutosh Mahajan November 11, 2018 at 6:25 pm

    This disease generally does not spread in a single short duration contact with patient. But, long duration contact usually more than 48 hours with patient can transmit this disease. Hence family members of patient are never spared from this disease and it continues from one generation to another. Many times during marriages, this disease is kept secret from opposite party.

  • Reply tokyobrwn January 4, 2019 at 5:33 pm


  • Reply letsplay optic February 28, 2019 at 6:40 pm

    Aruther has this

  • Reply yeet March 15, 2019 at 10:54 pm

    i am here because of arthur from rdr2

  • Reply Your Name March 18, 2019 at 6:05 am

    Rest In Peace Arthur. You deserved better

  • Reply Pericles Viglis March 18, 2019 at 1:11 pm

    RIP Arthur Morgan

  • Reply FIFA EXPENSE IS A COCK TOUCHER April 2, 2019 at 7:38 pm

    Also know as Downes disease if you know what I mean

  • Reply Shadow_Archer335 April 16, 2019 at 3:37 pm

    Has anyone seen my friend gavin??

  • Reply Joe Gazaway May 11, 2019 at 9:13 pm

    Can i used the video?

  • Reply what the fuck May 16, 2019 at 3:25 pm

    I miss author

  • Reply the truth May 20, 2019 at 8:52 pm

    Arthur Morgan rest in peace brother

  • Reply Ralph Vermolen June 4, 2019 at 11:18 am

    People in the comments be like: "R.I.P. Arthur Morgan"
    What about Doc Holliday? He was a real life gunslinger who died from it.

  • Reply Maya M June 10, 2019 at 10:30 am

    That was clear and straight to the point thank you.

  • Reply Rekt Ghost June 14, 2019 at 5:19 am

    Just for some muneh

  • Reply Da real micheal Jordan June 28, 2019 at 4:20 pm

    Arthur morgan can relate

  • Reply I can see July 1, 2019 at 11:13 am

    You gotta have faith…

  • Reply scar lxrd July 4, 2019 at 10:20 am

    Let's get a RIP in the comments for Arthur

  • Reply Dr. Kim Channel July 6, 2019 at 12:55 pm

    Dear admin.
    may i use this video for health education purposes. . i will give credit to your channel .. If you allow me, i will translate this language to my language and post to youtube… Not the entire video , only the related video to my topic.

    thank you..

  • Reply v CRAVKHEADBOB July 6, 2019 at 6:27 pm

    Rip doc holiday And arthur.

  • Reply v CRAVKHEADBOB July 6, 2019 at 6:28 pm


  • Reply celtics8402 July 8, 2019 at 8:43 am

    Someone could've shown Arthur Morgan this video.

  • Reply SciFyerGaming July 8, 2019 at 9:29 am

    I miss Arthur in story mode

  • Reply Kaybe Vang July 26, 2019 at 11:40 am

    Lol Everyone are here to mourn for our beloved Arthur Morgen

  • Reply cooking mania August 6, 2019 at 12:31 pm

    Mr Thomas downes …. You owe me money

  • Reply thegamerzoid24 August 8, 2019 at 4:00 pm

    If only arthur knew

    Arthur am I a joke to you

  • Reply Ryan Pendzik August 10, 2019 at 12:37 am

    I wish arther Morgan didn’t get tb

  • Reply Carolynne Sie August 18, 2019 at 3:12 am

    Thanks Dr. Eunice for sharing the videos! Its very informative!

  • Reply Dr Eunice Melissa August 18, 2019 at 12:17 pm

    A very informative video showing clearly the transmission and pathogenesis of tuberculosis

  • Reply Dennis Burke August 26, 2019 at 4:00 am

    Thanks for telling me what TB is, but not telling me the how.

  • Leave a Reply