The last case of small pox was repoed in the world
**Core Concept**
The question refers to the eradication of smallpox, a viral disease caused by the variola virus, which has been declared eradicated by the World Health Organization (WHO) in 1980. This achievement is a result of a global vaccination campaign led by the WHO.
**Why the Correct Answer is Right**
The last naturally occurring case of smallpox was reported in Somalia in 1977. The global vaccination campaign, which began in the 1950s, led to a significant reduction in the number of cases. The WHO officially declared the eradication of smallpox in 1980, making it the first and only human disease to be completely eliminated from the planet.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the eradication of smallpox.
**Option B:** This option might refer to other diseases, but it is not related to smallpox eradication.
**Option C:** This option is not accurate, as smallpox has been eradicated, and the last reported case was in 1977.
**Clinical Pearl / High-Yield Fact**
The eradication of smallpox is a significant achievement in the history of medicine, demonstrating the effectiveness of global cooperation and vaccination efforts in controlling infectious diseases.
**Correct Answer:** D.