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Anti-biotics and virus infections

spotsnall katzday at tamu.edu
Wed Jan 12 11:13:54 EST 2000

Second response to the below post--

Someone had stated incorrectly that antibiotics in animal feed somehow
suppressed or adversely affected the immune response.

Modem wrote:"The reason I have heard is that it suppresses any bacteria present 
allows the body's imune system to work full time fighting the virus.
They put (or used-to) large amoounts of antibiotics is animal feed for
similar reasons."

I did not view the above quote as the product of a student asking a question
but rather as an assertion about mechanisms of antimicrobial action--"allows
the immune system to function," and that's why it is put in animal feeds, etc.

This assertion is so far from correct that my response was not aimed at
a serious question from a student but at what I viewed as a nonsense anser
by someone too ill informed to be participating in the discussion.

This offended you, for which I am sorry, since I can tell that overall
we hold essentially science based views and wish to promolgate these.

In article <387d0176.1123244 at news.rdu.bellsouth.net>, johnstd at labcorp.com 
>Laboratory Corporation of America.
>LabCorp Clinical Trials Division provides biomedical laboratory
>testing services for all phases of drug development, from safety
>testing to molecular virology prognostics to viral genotyping.
>My comment was in relation to the original post... which was why
>clinicians often treat influenza with antibiotics.  Someone had
>replied with an honest effort, albeit wrong, speculating about the use
>of antibiotics in animal feeds...
>to which you replied with an unnecessarily obnoxious discourse on the
>complexity of the intestinal biology of feed animals.
>IMO, the response can match the query, regardless of how brilliant you
>are.  A suitable answer may have been, "The antibiotics are used as
>chemoprophylaxis to prevent otitis media or bacterial sinusitis, which
>are common secondary infections often seen with the flu.  
>As for animal feed, there are many uses of antimicrobials in feed, not
>the least of which is enriching populations of desired commensals,
>which can also be achieved by several probiotic strategies."
>Two sentences that answer the question without bashing the questioner.
>It's not in anyone's best interest to intimidate a student asking a
>question.  In several posts, I've seen you go out of your way to
>chastise a poster when you could have more easily answered the
>question with fewer words.  
>Rather than putting yourself on a pedestal, why not make use of your
>knowledge in a positive manner?  I find it hard to believe that you
>yourself have always been so well informed.  Chances are, you got help
>from someone like myself rather than being discouraged by someone like
>yourself during your education.  
>Best wishes,
>David M. Johnston, Ph.D.
>Chief Scientific Officer
>LabCorp Clinical Trials
>johnstd at labcorp.com
>On 11 Jan 2000 16:32:23 GMT, katzday at tamu.edu (spotsnall) wrote:
>>O.K., my mistake about Bell South. 
>> So what is LCA? Where are you located? What does the company do? Why do you 
>>you think the antibitics issue in animal feed is "simple."
>>THe growth promoting effects of antibiotics to my knowledge are not simple
>>matters.  SO, if I am wrong, please provide a short statement of how I am 
>>wrong or why you think I am wrong.
>>I'm serious here. I'm not trying to razz you or cause a flame war or anything
>>like that at all.
>>My workunit is embarking on several projects related to antimicrobial 
>>resistance issues and animal feed issues.  We are also concerned with
>>probiotics and their ability to both promote growth and to limit 
>>of pathogens in food animals.
>>So, while it might at first glance appear (seeing that we somehow got off
>>on the wrong foot) that we don't agree on things, I suspect we probably 
>>Looking forward to hearing from you.
>David Johnston
>dmj7 at bellsouth.net

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