a. Progress in diagnosis, in preventive medicine and in treatment, both medicinal and surgical, has been rapid and breathe taking.
b. Much in medicine which is not taken for granted was undreamt of even as recently as 20 years ago.
c. Presently small pox has been eradicated, poliomyelitis practically banished, tuberculosis has become curable and coronary artery disease surgically relievable.
d. The dramatic surge in the field of molecular biology and research by immunologists and geneticists has succeeded in controlling parasitic diseases like malaria and river blindness that affect millions of people round the world.