This could have adverse effects, similar to medication agains HIV/AIDS. People will get a vaccine and reduce their efforts of protection against Malaria by mosquito nets and other means. I hope that will not happen.
The last few years have been success after success with the Global Fund and the Gates Foundation pouring in money.
To continue your HIV/AIDS analogy, we know that people are taking more risks due to availability of HIV/AIDS meds. I don't think that means we should stop HIV/AIDS meds. We should still produce them and sell them.
And I got malaria anyway.