When the brigades reached a given area and were told that the inhabitants had been stricken by smallpox, the first thing they needed to do was to see if smallpox was indeed the disease that had befallen community members.
Cuando las brigadas llegaban a una localidad y se les comunicaba que había enfermos de viruela, lo primero que tenían que hacer era confirmar que efectivamente se tratara de esa enfermedad.