How many doses for the bacillus calmette-guérin?
CREATE TABLE "routine_immunization_schedule_for_infant" (
  "vaccine" text,
  "minimum_age_at_1st_dose" text,
  "number_of_doses" text,
  "dose" text,
  "minimum_interval_between_doses" text,
  "route" text
);
SELECT "number_of_doses" FROM "routine_immunization_schedule_for_infant" WHERE "vaccine"='bacillus calmette-guérin';