One of PubMed's great advantages is its list of geographical regions and countries which you can use when searching. You will find these listed in the MeSH database.
Any of these terms can be searched individually, or you can explode terms to search sections of the list.
For example if you search the MeSH Asia, Southeastern, PubMed will automatically explode the term to include the specific countries listed underneath it:
You can also search individual countries
To search for third world countries, PubMed uses the MeSH term Developing Countries.
"Countries in the process of change with economic growth, that is, an increase in production, per capita consumption, and income. The process of economic growth involves better utilization of natural and human resources, which results in a change in the social, political, and economic structures". Year introduced: 1971
PubMed Search Example
You may want to search a broad geographic region
World Health Organization resources:
The links below are arranged alphabetically by the name of the disease.