Well they are trying to find out if you have a fever (which is of course difficult) and they don't let unknown people entering their Barangay. Like in Valencia, Barangay Mampas; they set up a checkpoint. Civilians take turns every 2 hours checking people leaving and arriving. If they don"t know you they won't let you in. In your case they let you pass. They would not in Mampas. I know a foreigner who lives there.