Memo to whoever lands the world's top health job – do this first

Jobs don’t come much tougher than this. Whoever is chosen as the new head of the World Health Organization next week has $4.5 billion a year to spend – but when you’re trying to improve public health on a planet of 7.5 billion people, you have to use it wisely.

So the new director-general needs to prioritise areas where a sharper focus would squeeze the most out of every dollar, yen, euro or pound spent. Doing this would also bolster the case for an increase in the WHO’s budget.

Considered this way,…