Enabling Mongo full-text search and building an index.

enable_index.js

// enable text search
db.adminCommand( { setParameter : 1, textSearchEnabled : true } )
// build canepi-specific indices
db.healthmap.ensureIndex({"properties.summary": "text",
                          "properties.descr": "text",
                          "properties.country": "text",
                          "properties.disease": "text"},
                         { weights: { "properties.summary": 10,
                                      "properties.descr": 5,
                                      "properties.disease": 10,
                                      "properties.country":10},
                           name: "TextIndex"});