I want to know the answer to the following question:
How many broad types of anti-infective drugs exist?
All the background I'm provided with is that "Several broad types of anti-infective drugs exist, depending on the type of organism targeted; they include antibacterial (antibiotic; including antitubercular), antiviral, antifungal and antiparasitic (including antiprotozoal and antihelminthic) agents.". Is that enough to answer the question?