Re: [RML] TB web links

Y Jasperson (jasperson at
Fri, 8 Jan 1999 17:33:56 -1000

I have just read through the two web site links on TB that Adrian referred
to earlier on - should have done this before!

Is it correct to say the mycobacteria found in fish is the nontuberculosis
form of the mycobacteria? If transmission from fish to person should occur
then the human body's macrophages would come along and try to destroy the
bacteria by ingestion. If the macrophages fail to destroy the mycobacteria
then T cells would surround the infected macrophages forming a granuloma
keeping the mycobacteria locked in. If the 'outbreak' occurred on your
finger then they would have to be surgically removed.

As far as humans are concerned is that the end of it? No tuberculosis for
us even though it is the end of the line for the fish?? Could these
granulomas be formed in parts of the body which are not so visible? Would
the T cells keep the mycobacteria locked up for good?


-----Original Message-----
From: Y Jasperson <jasperson at>
To: rainbowfish at <rainbowfish at>
Date: Saturday, 9 January 1999 12:15
Subject: Re: [RML] Dark half or quarter on rainbowfish

>Of recent times (interestingly since the temperatures have increased - I
>often have an internal house temperature of 36C and upwards in the summer)
>have had a number of fish in one tank fall victims to what I would say was
>TB based on all the info Adrian has given on the subject. Just the other
>night a praecox fish literally blew up and exploded overnight night. I
>scooped him and his guts out the next morning and disposed of him.
>This TB thing concerns me somewhat particularly since I recently came into
>possession of a newsletter produced by the Mater Misericordiae Public
>Hospital here in Brisbane which focused on Tuberculosis.
>The newsletter mentioned that TB is spread through the air when a person
>with active TB disease of the lungs or throat coughs or sneezes where
>enormous numbers of mycobacteria can be emitted. The bacteria have a waxy
>outer coat which resists drying and allows them to survive for long periods
>in air and dust. People in close proximity to the TB infected cough/sneeze
>may breathe in the bacteria and become infected. Generally people with
>tuberculosis of other organs are unlikely to be contagious. Once in the
>host the bacteria become inactive, but remain alive in the body. The TB
>bacteria become active if the host's immune response is unable to stop
>growth. Some people develop TB disease soon after being infected before
>their immune system can fight the bacteria. Others become ill much later
>when their immune system is weakened.
>Can anyone tell me (Bruce?) exactly what is the difference between the
>mycobacteria found in fish displaying symptoms of TB and the mycobacteria
>that humans might breath in from an infected person? If you came into
>contact with an exploded TB infected fish does that mean you may be
>susceptible to catching the disease (after all one does not normally come
>into contact with and exploded TB infested human). With the bacteria
>having a waxy outer coat could this mean a person may pick up fish
>mycobacteria that could be living on the tank and in hoses filters etc
>you do a water change or something? Would washing your hands in soap and
>water be enough or do you have a scrub down in bleach and alcohol