In which way have microbes played a major role in controlling diseases caused by harmful bacteria?
Microbes produce certain chemical substances, called antibiotics that can be used to kill or retard the growth of other disease-causing microbes.
Antibiotics have been used to treat deadly diseases such as plague, whooping cough (kali khansi), diphtheria (galghotu) and leprosy (kusht rog) and many other common infections.