If we know that we're going to get extra bang for the buck from providing clean water, then I think that we can say, let's push the effort into that aspect of the control, so that we can actually solve the problem, even though, if you just look at the frequency of infection, you would suggest that you can't solve the problem well enough just by cleaning up water supply.
Daca stim ca urmeaza sa merite sa furnizam apa curata, atunci cred ca putem spune, haideti sa facem eforturi in privinta aspectului controlului, ca sa putem rezolva de fapt problema, chiar daca, daca ne uitam doar la frecventa infectiei, ai putea sugera ca nu poti rezolva suficient de bine problema doar prin curatarea aprovizionarii cu apa.