Select the macrolide antibiotic that can be given once daily for 3 days for empirical treatment of ear-nosethroat, respiratory and genital infections: A. Erythromycin B. Azithromycin C. Roxithromycin D. Clarithromycin

Select the macrolide antibiotic that can be given once
daily for 3 days for empirical treatment of ear-nosethroat, respiratory and genital infections:
A. Erythromycin
B. Azithromycin
C. Roxithromycin
D. Clarithromycin
by

1 Answer

Answer :

B. Azithromycin
by

Related questions

Select the macrolide antibiotic having clinically useful antileprotic activity: A. Azithromycin B. Clarithromycin C. Erythromycin D. Roxithromycin

Description : Select the macrolide antibiotic having clinically useful antileprotic activity: A. Azithromycin B. Clarithromycin C. Erythromycin D. Roxithromycin

Last Answer : B. Clarithromycin

The following antibiotic is a first line drug for treatment of Mycobacterium avium complex infection in AIDS patients: A. Clindamycin B. Clarithromycin C. Roxithromycin D. Erythromycin

Description : The following antibiotic is a first line drug for treatment of Mycobacterium avium complex infection in AIDS patients: A. Clindamycin B. Clarithromycin C. Roxithromycin D. Erythromycin

Last Answer : B. Clarithromycin

The following is true of clarithromycin except: A. It produces less gastric irritation and pain than erythromycin B. It is the most active macrolide antibiotic against Helicobacter pylori C. It does not interact with terfenadine or cisapride to cause cardiac arrhythmias D. It exhibits dose dependent elimination kinetics

Description : The following is true of clarithromycin except: A. It produces less gastric irritation and pain than erythromycin B. It is the most active macrolide antibiotic against Helicobacter pylori ... terfenadine or cisapride to cause cardiac arrhythmias D. It exhibits dose dependent elimination kinetics

Last Answer : C. It does not interact with terfenadine or cisapride to cause cardiac arrhythmias

The following antibiotic is a first line drug for treatment of Mycobacterium avium complex infection in AIDS patients (a) Clindamycin (b) Clarithromycin (c) Roxithromycin (d) Erythromycin

Description : The following antibiotic is a first line drug for treatment of Mycobacterium avium complex infection in AIDS patients (a) Clindamycin (b) Clarithromycin (c) Roxithromycin (d) Erythromycin

Last Answer : Ans: B

A single oral dose of the following antibiotic is curative in most patients of nonspecific urethritis due to Chlamydia trachomatis: A. Doxycycline B. Azithromycin C. Erythromycin D. Cotrimoxazole

Description : A single oral dose of the following antibiotic is curative in most patients of nonspecific urethritis due to Chlamydia trachomatis: A. Doxycycline B. Azithromycin C. Erythromycin D. Cotrimoxazole

Last Answer : B. Azithromycin

Choose the correct statement about tetracyclines: A. Being broad spectrum antibioics they are dependable for empirical treatment of lifethreatening infections B. Currently, they are not the first choice antibiotic for any specific infection C. They reduce stool volume and duration of diarrhoea in cholera D. The are preferred for treatment of anaerobic bacterial infections

Description : Choose the correct statement about tetracyclines: A. Being broad spectrum antibioics they are dependable for empirical treatment of lifethreatening infections B. Currently, they are not the first ... of diarrhoea in cholera D. The are preferred for treatment of anaerobic bacterial infections

Last Answer : C. They reduce stool volume and duration of diarrhoea in cholera

A premature neonate suffered respiratory distress and was given an antibiotic 100 mg/kg/day orally. Over the next two days his condition worsened, he become dull, stopped feeding, developed abdominal distention and an ashen gray appearance. Which is the most likely antibiotic given to him: A. Ampicillin B. Chloramphenicol C. Erythromycin D. Ciprofloxacin

Description : A premature neonate suffered respiratory distress and was given an antibiotic 100 mg/kg/day orally. Over the next two days his condition worsened, he become dull, stopped feeding, developed ... most likely antibiotic given to him: A. Ampicillin B. Chloramphenicol C. Erythromycin D. Ciprofloxacin

Last Answer : B. Chloramphenico

Roxithromycin has the following advantage(s) over erythromycin: A. It is more effective in whooping cough B. It causes less gastric irritation C. It has longer plasma half-life D. Both 'B' and 'C' are correct

Description : Roxithromycin has the following advantage(s) over erythromycin: A. It is more effective in whooping cough B. It causes less gastric irritation C. It has longer plasma half-life D. Both 'B' and 'C' are correct

Last Answer : D. Both 'B' and 'C' are correct

Select the antibiotic(s) that can be used to treat nonspecific urethritis due to Chlamydia trachomatis: A. Azithromycin B. Doxycycline C. Clindamycin D. Both 'A' and 'B' are correct

Description : Select the antibiotic(s) that can be used to treat nonspecific urethritis due to Chlamydia trachomatis: A. Azithromycin B. Doxycycline C. Clindamycin D. Both 'A' and 'B' are correct

Last Answer : D. Both 'A' and 'B' are correct

Clarithromycin and erythromycin have very similar spectrums of antimicrobial activity. The major advantage of clarithromytcin is that it (a) Eradicates mycoplasmal infections in a single dose (b) Is active against strains of streptococci that are resistant to erythromycin (c) Is more active against Mycobacterium avium complex (d) Does not inhibit live drug-metabolizing enzymes (e) Acts on methicillin-resistant strains of staphylococci

Description : Clarithromycin and erythromycin have very similar spectrums of antimicrobial activity. The major advantage of clarithromytcin is that it (a) Eradicates mycoplasmal infections in a single dose (b ... not inhibit live drug-metabolizing enzymes (e) Acts on methicillin-resistant strains of staphylococci

Last Answer : Ans: C

The distinctive features of azithromycin include the following except: A. Efficacy against organisms which have developed resistance to erythromycin B. Marked tissue distribution and intracellular penetration C. Long terminal elimination half-life D. Low propensity to drug interactions due to inhibition of cytochrome P450 enzymes

Description : The distinctive features of azithromycin include the following except: A. Efficacy against organisms which have developed resistance to erythromycin B. Marked tissue distribution and intracellular penetration ... D. Low propensity to drug interactions due to inhibition of cytochrome P450 enzymes

Last Answer : A. Efficacy against organisms which have developed resistance to erythromycin

Compared to erythromycin, azithromycin has: A. Extended antimicrobial spectrum B. Better gastric tolerance C. Longer duration of action D. All of the above

Description : Compared to erythromycin, azithromycin has: A. Extended antimicrobial spectrum B. Better gastric tolerance C. Longer duration of action D. All of the above

Last Answer : D. All of the above

Select the antibiotic which inhibits drug metabolizing isoenzyme CYP3A4 resulting in potentially fatal drug interaction with terfenadine: A. Erythromycin B. Clindamycin C. Gentamicin D. Vancomycin

Description : Select the antibiotic which inhibits drug metabolizing isoenzyme CYP3A4 resulting in potentially fatal drug interaction with terfenadine: A. Erythromycin B. Clindamycin C. Gentamicin D. Vancomycin

Last Answer : A. Erythromycin

Select the antibiotic which inhibits bacterial protein synthesis by interfering with translocation of elongating peptide chain from acceptor site back to the peptidyl site of the ribosome so that ribosome does not move along the mRNA and the peptide chain is prematurely terminated: A. Chloramphenicol B. Erythromycin C. Tetracycline D. Streptomycin

Description : Select the antibiotic which inhibits bacterial protein synthesis by interfering with translocation of elongating peptide chain from acceptor site back to the peptidyl site of the ribosome so that ... chain is prematurely terminated: A. Chloramphenicol B. Erythromycin C. Tetracycline D. Streptomycin

Last Answer : B. Erythromycin

Select the antibiotic whose dose must be reduced in patients with renal insufficiency: A. Ampicillin B. Chloramphenicol C. Tobramycin D. Erythromycin

Description : Select the antibiotic whose dose must be reduced in patients with renal insufficiency: A. Ampicillin B. Chloramphenicol C. Tobramycin D. Erythromycin

Last Answer : C. Tobramycin

When is azithromycin ever used to treat middle ear infections?

Description : When is azithromycin ever used to treat middle ear infections?

Last Answer : Is this the antibiotic that you take for only 5 days?

The following antibiotic is highly active against anaerobic bacteria including Bacteroides fragilis: A. Ciprofloxacin B. Clarithromycin C. Clindamycin D. Tobramycin

Description : The following antibiotic is highly active against anaerobic bacteria including Bacteroides fragilis: A. Ciprofloxacin B. Clarithromycin C. Clindamycin D. Tobramycin

Last Answer : C. Clindamycin

In a patient with culture-positive enterococcal endocarditis who has failed to respond to vancomycin because of resistance, the treatment most likely to be effective is (a) Clarithromycin (b) Erythromycin (c) Linezolid (d) Minocycline (e) Ticarcillin

Description : In a patient with culture-positive enterococcal endocarditis who has failed to respond to vancomycin because of resistance, the treatment most likely to be effective is (a) Clarithromycin (b) Erythromycin (c) Linezolid (d) Minocycline (e) Ticarcillin

Last Answer : Ans: D

Roxithromycin has the following advantages over erythromycin except (a) It is more effective in whooping cough (b) It causes less gastric irritation (c) It has longer plasma half-life (d) It is unlikely to precipitate theophylline toxicity

Description : Roxithromycin has the following advantages over erythromycin except (a) It is more effective in whooping cough (b) It causes less gastric irritation (c) It has longer plasma half-life (d) It is unlikely to precipitate theophylline toxicity

Last Answer : Ans: A

The following antibiotic penetrates blood-CSF barrier the best: A. Erythromycin B. Gentamicin C. Tetracycline D. Chloramphenicol

Description : The following antibiotic penetrates blood-CSF barrier the best: A. Erythromycin B. Gentamicin C. Tetracycline D. Chloramphenicol

Last Answer : D. Chloramphenicol

An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition: A. Chloramphenicol B. Tetracycline C. Erythromycin D. Gentamicin

Description : An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition: A. Chloramphenicol B. Tetracycline C. Erythromycin D. Gentamicin

Last Answer : Tetracycline

2 Which antibiotic is primarily bacteriostatic but becomes bactericidal at higher concentrations: A. Erythromycin B. Tetracycline C. Chloramphenicol D. Ampicillin

Description : 2 Which antibiotic is primarily bacteriostatic but becomes bactericidal at higher concentrations: A. Erythromycin B. Tetracycline C. Chloramphenicol D. Ampicillin

Last Answer : A. Erythromycin Although erythromycin is primarily bacteriostatic, it is bactericidal at high concentrations for some Gram-positive species, such as group A streptococci and pneumococci

The following antibiotic accentuates the nuromuscular blockade produced by pancuronium: A. Streptomycin B. Erythromycin C. Penicillin G D. Chloramphenicol

Description : The following antibiotic accentuates the nuromuscular blockade produced by pancuronium: A. Streptomycin B. Erythromycin C. Penicillin G D. Chloramphenicol

Last Answer : A. Streptomycin

The regimens recommended for treatment of chloroquine resistant P.falciparum malaria in an adult include the following except: A. Quinine 10 mg/kg/8 hourly+ doxycycline 100 mg/day for 7 days B. Quinine 10 mg/kg 3 times a day × 7 days with pyrimethamine 75 mg + sulfadoxine 1500 mg on first day C. Mefloquine 0.5 g daily for 7 days D. Artemether 80 mg i.m./twice on first day followed by once daily for 4 days

Description : The regimens recommended for treatment of chloroquine resistant P.falciparum malaria in an adult include the following except: A. Quinine 10 mg/kg/8 hourly+ doxycycline 100 mg/day for 7 days B. Quinine 10 mg/kg ... 7 days D. Artemether 80 mg i.m./twice on first day followed by once daily for 4 days

Last Answer : C. Mefloquine 0.5 g daily for 7 days

What is true of acyclovir treatment of genital herpes simplex: A. Topical treatment affords symptomatic relief in primary as well as recurrent disease B. Oral therapy for 10 days affords symptomatic relief as well as prevents recurrences C. Oral therapy for 10 days affords symptomatic relief but does not prevent recurrences D. Continuous long-term topical therapy is recommended to prevent recurrences

Description : What is true of acyclovir treatment of genital herpes simplex: A. Topical treatment affords symptomatic relief in primary as well as recurrent disease B. Oral therapy for 10 days affords ... does not prevent recurrences D. Continuous long-term topical therapy is recommended to prevent recurrences

Last Answer : C. Oral therapy for 10 days affords symptomatic relief but does not prevent recurrences

Select the antibiotic which is equally effective whether injected 8 hourly or 24 hourly, provided the total daily dose remains the same: A. Gentamicin B. Sod. penicillin G C. Cefazolin D. Vancomycin

Description : Select the antibiotic which is equally effective whether injected 8 hourly or 24 hourly, provided the total daily dose remains the same: A. Gentamicin B. Sod. penicillin G C. Cefazolin D. Vancomycin

Last Answer : A. Gentamicin

Select the antimicrobial agent that can be used to treat with both methicillin resistant and vancomycin resistant Staphylococcus aureus infection: A. Clarithromycin B. Clindamycin C. Linezolid D. Lincomycin

Description : Select the antimicrobial agent that can be used to treat with both methicillin resistant and vancomycin resistant Staphylococcus aureus infection: A. Clarithromycin B. Clindamycin C. Linezolid D. Lincomycin

Last Answer : C. Linezolid

Select the antimicrobial drug which is used orally only for urinary tract infection or for bacterial diarrhoeas: A. Nalidixic acid B. Azithromycin C. Bacampicillin D. Pefloxacin

Description : Select the antimicrobial drug which is used orally only for urinary tract infection or for bacterial diarrhoeas: A. Nalidixic acid B. Azithromycin C. Bacampicillin D. Pefloxacin

Last Answer : A. Nalidixic acid

A patient of bronchial asthma maintained on theophylline developed upper respiratory tract infection. Which antimicrobial if used can increase the risk of developing theophylline toxicity: A. Ampicillin B. Cephalexin C. Cotrimoxazole D. Erythromycin

Description : A patient of bronchial asthma maintained on theophylline developed upper respiratory tract infection. Which antimicrobial if used can increase the risk of developing theophylline toxicity: A. Ampicillin B. Cephalexin C. Cotrimoxazole D. Erythromycin

Last Answer : D. Erythromycin

Neomycin is widely used as a topical antibiotic because: A. It is active against a wide range of bacteria causing superfecial infections B. It rarely causes contact sensitization C. It is poorly absorbed from the topical sites of application D. All of the above are correct

Description : Neomycin is widely used as a topical antibiotic because: A. It is active against a wide range of bacteria causing superfecial infections B. It rarely causes contact sensitization C. It is poorly absorbed from the topical sites of application D. All of the above are correct

Last Answer : D. All of the above are correct

Which of the following drugs has demonstrated in vitro activity against Mycobacterium avium-intracellular(MAI)? (a) Vancomycin (b) Clarithromycin (c) Erythromycin base (d) Troleandomycin (e) Erythromycin estolate

Description : Which of the following drugs has demonstrated in vitro activity against Mycobacterium avium-intracellular(MAI)? (a) Vancomycin (b) Clarithromycin (c) Erythromycin base (d) Troleandomycin (e) Erythromycin estolate

Last Answer : Ans: B

In the empiric treatment of severe bacterial infections of unidentified entiology, this drug, often used in combination with an aminoglycoside, provides coverage against many staphylococci (a) Amoxicillin (b) Clavulanic acid (c) Erythromycin (d) Nafcillin (e) Tetracycline

Description : In the empiric treatment of severe bacterial infections of unidentified entiology, this drug, often used in combination with an aminoglycoside, provides coverage against many staphylococci (a) Amoxicillin (b) Clavulanic acid (c) Erythromycin (d) Nafcillin (e) Tetracycline

Last Answer : Ans: D

Choose the correct statement(s) about inhaled glucocorticoids in chronic obstructive pulmonary disease (COPD): A. They are indicated in COPD only for severe/ advanced cases B. Instituted early they retard the progression of COPD C. Their use predisposes to respiratory infections D. Both 'A' and 'B

Description : Choose the correct statement(s) about inhaled glucocorticoids in chronic obstructive pulmonary disease (COPD): A. They are indicated in COPD only for severe/ advanced cases B. Instituted early they retard the progression of COPD C. Their use predisposes to respiratory infections D. Both 'A' and 'B

Last Answer : A. They are indicated in COPD only for severe/ advanced cases

Select the antibiotic whose dose must be reduced in patients with renal insufficiency (a) Ampicillin (b) Chloramphenicol (c) Tobramycin (d) Erythromycin

Description : Select the antibiotic whose dose must be reduced in patients with renal insufficiency (a) Ampicillin (b) Chloramphenicol (c) Tobramycin (d) Erythromycin

Last Answer : Ans: C

The drug of choice for treatment of methicillin resistant Staphylococcus aureus infection is: A. Cloxacillin B. Vancomycin C. Erythromycin D. Amikacin

Description : The drug of choice for treatment of methicillin resistant Staphylococcus aureus infection is: A. Cloxacillin B. Vancomycin C. Erythromycin D. Amikacin

Last Answer : B. Vancomycin

Spectinomycin is an aminoglycoside-like antibiotic indicated for the treatment of (a) Gram-negative bacillary septicemia (b) Tuberculosis (c) Penicillin-resistant gonococcal infections (d) Syphilis (e) Gram-negative meningitis due to susceptible organisms

Description : Spectinomycin is an aminoglycoside-like antibiotic indicated for the treatment of (a) Gram-negative bacillary septicemia (b) Tuberculosis (c) Penicillin-resistant gonococcal infections (d) Syphilis (e) Gram-negative meningitis due to susceptible organisms

Last Answer : Ans: C

For the treatment of female infertility, clomiphene citrate is used in the following manner: A. Daily from 5th to 10th day of menstrual cycle B. On alternate days over the last two weeks of menstrual cycle C. Cyclically for 3 weeks with one week gap D. Continuously till conception occurs

Description : For the treatment of female infertility, clomiphene citrate is used in the following manner: A. Daily from 5th to 10th day of menstrual cycle B. On alternate days over the last two weeks of menstrual cycle C. Cyclically for 3 weeks with one week gap D. Continuously till conception occurs

Last Answer : A. Daily from 5th to 10th day of menstrual cycle

If a multibacillary leprosy patient treated with standard fixed duration multidrug therapy relapses, he should be treated with: A. The same rifampin + dapsone + clofazimine regimen B. Clofazimine + ofloxacin + minocycline C. Clofazimine + ofloxacin + clarithromycin D. Ofloxacin + minocycline + clarithromycin

Description : If a multibacillary leprosy patient treated with standard fixed duration multidrug therapy relapses, he should be treated with: A. The same rifampin + dapsone + clofazimine regimen B. ... + minocycline C. Clofazimine + ofloxacin + clarithromycin D. Ofloxacin + minocycline + clarithromycin

Last Answer : . The same rifampin + dapsone + clofazimine regimen

The drugs used to treat Mycobact. avium complex infection in AIDS patients include the following except: A. Isoniazid B. Clarithromycin C. Ethambutol D. Ciprofloxacin

Description : The drugs used to treat Mycobact. avium complex infection in AIDS patients include the following except: A. Isoniazid B. Clarithromycin C. Ethambutol D. Ciprofloxacin

Last Answer : A. Isoniazid

Mycobact. tuberculosis infection in a HIV infected patient is treated with: A. The same antitubercular regimen as HIV negative patient B. Four first line antitubercular drugs for 2 months followed by a longer continuation phase of 7 months with rifampin + isoniazid C. All 5 first line antitubercular drugs for 9 months D. Clarithromycin + Ciprofloxacin + Rifabutin for 12 months

Description : Mycobact. tuberculosis infection in a HIV infected patient is treated with: A. The same antitubercular regimen as HIV negative patient B. Four first line antitubercular drugs for 2 months followed ... line antitubercular drugs for 9 months D. Clarithromycin + Ciprofloxacin + Rifabutin for 12 months

Last Answer : B. Four first line antitubercular drugs for 2 months followed by a longer continuation phase of 7 months with rifampin + isoniazid

Clarithromycin is used for the following: A. Multidrug resistant M.tuberculosis infection B. M.avium complex infection in AIDS patient C. M.tuberculosis infection in a patient who develops jaundice due to first line antitubercular drugs D. Both ‘A’ and ‘B’ are correct

Description : Clarithromycin is used for the following: A. Multidrug resistant M.tuberculosis infection B. M.avium complex infection in AIDS patient C. M.tuberculosis infection in a patient who develops jaundice due to first line antitubercular drugs D. Both ‘A’ and ‘B’ are correct

Last Answer : B. M.avium complex infection in AIDS patient

Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined “hot zone” for a period of a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were inhaled, bacteria will be killed immediately upon release from spores. Those who have symptoms of fever, cough, headache, chills, and especially evidence of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.

Description : Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined hot zone for a period of a) 60 days. Those with symptoms who have been in the hot zone should ... . Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic

Last Answer : a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were ... of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.

Select the drug which is used to treat antibiotic associated pseudomembranous enterocolitis and is a component of anti-H.pylori triple drug regimen: A. Amoxicillin B. Vancomycin C. Metronidazole D. Clotrimazole

Description : Select the drug which is used to treat antibiotic associated pseudomembranous enterocolitis and is a component of anti-H.pylori triple drug regimen: A. Amoxicillin B. Vancomycin C. Metronidazole D. Clotrimazole

Last Answer : C. Metronidazole

Select the most potent tetracycline antibiotic: A. Demeclocycline B. Oxytetracycline C. Minocycline D. Doxycycline

Description : Select the most potent tetracycline antibiotic: A. Demeclocycline B. Oxytetracycline C. Minocycline D. Doxycycline

Last Answer : C. Minocycline

Select the antibiotic that has a high therapeutic index: A. Streptomycin B. Doxycycline C. Cephalexin D. Vancomycin

Description : Select the antibiotic that has a high therapeutic index: A. Streptomycin B. Doxycycline C. Cephalexin D. Vancomycin

Last Answer : C. Cephalexin

Select the condition for which 3 days treatment with pyrantel pamoate is recommended in place of single dose therapy for others: A. Ascariasis B. Ancylostomiasis C. Necatoriasis D. Enterobiasis

Description : Select the condition for which 3 days treatment with pyrantel pamoate is recommended in place of single dose therapy for others: A. Ascariasis B. Ancylostomiasis C. Necatoriasis D. Enterobiasis

Last Answer : C. Necatoriasis

Surgical antibiotic prophylaxis for clean elective surgery started just before operation should be continued for: A. One day B. Three days C. Five days D. Seven days

Description : Surgical antibiotic prophylaxis for clean elective surgery started just before operation should be continued for: A. One day B. Three days C. Five days D. Seven days

Last Answer : A. One day

In the multidrug therapy of leprosy, rifampicin is given: A. Daily B. On alternate days C. Weekly D. Monthly

Description : In the multidrug therapy of leprosy, rifampicin is given: A. Daily B. On alternate days C. Weekly D. Monthly

Last Answer : D. Monthly

Select the correct statement about nitrous oxide: A. It irritates the respiratory mucosa B. It has poor analgesic action C. It is primarily used as a carrier and adjuvant to other anaesthetics D. It frequently induces post anaesthetic nausea and retching

Description : Select the correct statement about nitrous oxide: A. It irritates the respiratory mucosa B. It has poor analgesic action C. It is primarily used as a carrier and adjuvant to other anaesthetics D. It frequently induces post anaesthetic nausea and retching

Last Answer : C. It is primarily used as a carrier and adjuvant to other anaesthetics

An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition ? (a) Chloramphenicol (b) Tetracycline (c) Erythromycin (d) Genetamicin

Description : An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition ? (a) Chloramphenicol (b) Tetracycline (c) Erythromycin (d) Genetamicin

Last Answer : Ans: B