After decades of fighting against Polio, World Health Organization (WHO) announced that only nine cases of the viral disease have been reported this year, and the organization will completely put an end to the disease early of year 2017.
This would make polio the second disease to fully put an end in humans since WHO declared smallpox gone in 1980.
Polio is a highly infectious disease that spreads through human contact, mostly through stools. This makes toddlers not properly toilet-trained and people living in very undeveloped areas capable to disease.
In a poorly sanitized areas, the virus has high possibility of becoming stronger, but it may weakened the virus through oral vaccinations. We know that polio vaccine is given orally, those immunized may spread the weakened version through ‘passive immunization’.
To prevent the phenomenon, there will be a two-step synchronized event. An oral vaccine carrying the bivalent version were used instead of the trivalent version. Trivalent version had no cases since 1999. After two weeks, the oral vaccine will be replaced by an injected version to prevent vaccine-induced polio.
The report seems to be good news to us, and if it will end soon, it will make the world more healthier.