Answer:
Alexander Fleming was the man who discovered penicillin.
One day he discovered the first antibiotic, penicillin. He had some bacteria called 'Staphylococcus aureus' which he put on a petri dish. Alexander Fleming then realised that this bacteria had been killed by mould which was growing on the petri dish.
hopE it helpZ~
Here are a few facts:
Fact #1:
Broad spectrum antibiotic is one which covers gram positive, gram negative, anaerobes and atypical pathogens.
Fact #2:
Presently, third generation antibiotics ceftriaxone , ceftazidime, cefotaxime and panamas are broadest spectrum anti biotics.
Fact #3:
A narrow-spectrum antibiotic is one that acts on specific groups on bacteria only unlike broad-spectrum antibiotics that are known to be effective on wide range of bacterial species.
Any of a group of chemical substances, as penicillin or streptomycin, produced by various microorganisms and fungi, having the capacity in dilute solutions to inhibit the growth of or to destroy bacteria and other microorganisms, used chiefly in the treatment of infection diseases.
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Quick Lesson Walkthrough:
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An antibiotic may be classified basically as "narrow- spectrum" or "broad-spectrum" depending on the range of bacterial types that it affects.
Narrow-spectrum antibiotics are active against a selected group of bacterial types.
The narrow spectrum antibiotic will cause less resistance of the bacteria as it will deal with only specific bacteria. Narrow spectrum antibiotics can be used only if the causative organism is identified. If you don't choose the drug very carefully, the drug may not actually kill the microorganism causing the infection.
Broad-spectrum antibiotics are active against a wider number of bacterial types and, thus, may be used to treat a variety of infectious diseases.
Broad-spectrum antibiotics are properly used in the following medical situations: Prior to identifying the bacteria that is causing an illness when there is potentially serious illness would result in delay of treatment. This occurs, for example, in meningitis, where the patient can become so ill that he/she could die within hours if broad-spectrum antibiotics are not initiated. For drug resistant bacteria that do not respond to other, more narrow spectrum antibiotics.
Some advantages are broader spectra of activity, a clear advantage to the use of broad spectrum antibiotics is that there is less of a need to identify the infecting pathogen with real certainty before beginning treatment.
Some disadvantages are that children who receive broad-spectrum antibiotics during their first year of life are at increased risk of developing childhood Asthma. Broad spectrum antibiotics may give rise to drug resistance.
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Learn more about broad-spectrum antibiotics:
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