Question

why is it difficult to develope medicines of some diseases?​

Answer 1

Answer:

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Explanation:

Over time certain bacteria, so-called 'superbugs', have adapted and learned to resist the effects of the drugs designed to kill them. Our collective overuse of antibiotics – in humans, animals and plants – has accelerated this process. Today, drug-resistant infections are a serious threat to people's health.

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Answer 2

Answer:

New antiviral drugs are also in short supply. These medicines have been much more difficult to develop than antibacterial drugs because antivirals can damage host cells where the viruses reside.