Lessons from ZikaYour article “The Zika explosion” (6 February) raises some important issues. But we confuse the issue if we take Zika by itself. The same mosquito that spreads Zika spreads dengue and chikungunya fever, and we in the UK are highly unlikely to see it take hold here.  Hype about our very small risk is in danger of obscuring the fact that the burden of these diseases fall mostly on the poorest countries, even with sexual transmission now appearing in the US and Europe.But there is more sloppy thinking going on here. Whether one sees abortion as never, sometimes or always permissible, equating it with a prevention measure is simplistic and too late. Our most prominent answer to reducing child death and malformation from German measles is vaccination, not abor