Question

the period when the demand for penicillin become greater​

Answer 1

The paths, followed by other researchers, resulted in a number of new antibiotics, some of which made their way up to the patient's bedside. The period between the 1950s and 1970s was indeed the golden era of discovery of novel antibiotics classes, with no new classes discovered since then.

Answer 2

The first patient was successfully treated for streptococcal septicemia in the United States in 1942. However, supply was limited and demand was high in the early days of penicillin. Penicillin helped reduce the number of deaths and amputations of troops during World War II.