Comment The number of infections has gone down (Score 1) 245
To say there is no market for antibiotics because they are used for only a short time is only part of the problem. It wouldn't matter if a lot of people were continually getting infected.
Sulfa and penicillin went into mass production because of WWII. The huge number of battlefield wounds and the resulting infections created a large demand and there was a crash program to manufacture these antibiotics.
After the war, mass production continued and in many countries antibiotics could be purchased over the counter. While this eventually contributed to bacterial resistance, there's no doubt there was a huge market for antibiotics and it prompted the development of many different antibiotic families.
So the question must be asked why aren't the same economic factors still causing the development of new antibiotics? While it costs more to develop a new antibiotic today, there's a lot more people in the world to justify it. The answer is that while certain diseases have become resistant, for the most part the old antibiotics still work and there just isn't enough people needing new antibiotics to justify the development expenses.