A recent study addresses rising negative interactions between humans and animals and proposes population control measures as long-term solutions, while emphasising the need for continued research. In states such as Himachal Pradesh, Uttarakhand and Kerala, where conflicts with certain animals such as rhesus macaques and wild boars reached a tipping point, the animals have been tagged vermin and cullings are mooted. As a humane solution to the problem, the Wildlife Institute of India, after three years of research into the matter, has come up with mitigation measures including immuno-contraception for population control of species most-in-conflict.