Fear of disease in Typhoon Haiyan aftermath
26 November 2013 Last updated at 10:42 GMT
A mass vaccination programme is getting under way in the Philippines, to immunise 33,000 children affected by Typhoon Haiyan.
There are concerns about the spread of diseases, as families left homeless, continue to live in cramped, unsanitary conditions.
The BBC's global health correspondent, Tulip Mazumdar reports from Tacloban.