public String toString() {
		int numberOfRPoints = this.allOutbreakLocations.size();
		if (numberOfRPoints == 1) {
			return this.allOutbreakLocations.get(0).shortString();
		} else {
			String result = "Outbreak with " + numberOfRPoints + " OutbreakLocation(s): ";
			for (int i=0; i<numberOfRPoints-1; i++) {
				result += this.allOutbreakLocations.get(i).toString() + "; ";
			}
			// Don't want to add ';' to last OutbreakLocation entry...
			result += this.allOutbreakLocations.get(numberOfRPoints-1).toString();
			return result;
		}		
	}