Somehow the wizards at Merck or their original researchers like CSL Ltd. have made the already-impressive Gardasil even more effective.
The new Gardasil-9 protects against even more strains of HPV than before.
The old vaccine protected against 4 varieties & had a 97% prevention rate. And those 4 strains covered 70% of all potentially-lethal HPV.
Mystifyingly, even though it covers more than twice as many strains,…