The person who told me this told me that they applied the treatment on the first day, as first aid. In the state of Bolivar the distances are enormous (it is the largest state in Venezuela), and the road system and rural roads are not always in good condition, and sometimes they are under water, due to the flooding of the rivers, so it took many hours to get to a hospital center.
Before communism was established in my country, there was an Institute of Scientific Research (IVIC), which was a great institution, and they did a lot of research in various areas of science, and one of the most developed fields of research was the production of various antiophidic serums. It worked so well that they exported these serums to Brazil. Today that institute is in ruins, and produces neither research nor medicines.