Technological Advancements and Limitations - Disease

The world today faces high risks from new pandemics, but we also have the scientific tools needed to create a global response system, according to virologist Nathan Wolfe. Environmental factors have notably impacted human populations since 1900. Advancements in science, medicine, and public health efforts have led to decreases in mortality and illness related to various diseases. Pandemics are defined as epidemic diseases that spread across borders.

The Eradication of Smallpox

  • Smallpox was a disease that greatly affected past civilizations, killing millions until its eradication in 1979 after a global vaccination campaign led by the WHO. Only two samples remain at the CDC in the U.S.

Disease and Poverty

  • Many diseases continue to exist despite cures due to socio-economic issues, including poor living conditions and limited access to healthcare.

Malaria:

  • A mosquito-borne disease affecting primarily Africans; causes over 600,000 annual deaths.

  • Treatment includes insecticide-treated nets and ongoing vaccine development.

Tuberculosis (TB):

  • An airborne disease that led to a global campaign starting in the 2010s. Drug-resistant strains are a current worry.

Cholera:

  • Spread through contaminated water causing about 95,000 deaths yearly. Prevention methods include water sanitation and rehydration for the infected.

Global Mortality by Income Level (2016)
Low-Income Countries:

  • Major causes: lung infections, diarrhea, heart disease, HIV/AIDS, stroke, malaria, tuberculosis, and complications related to childbirth.

Upper-Middle-Income Countries:

  • Major causes are usually non-communicable diseases such as heart disease, stroke, and cancer.

The Campaign Against Polio

  • Polio, a viral disease previously causing paralysis, has nearly been eliminated due to vaccination efforts that began in 1988, although challenges remain in certain regions.

Modern Epidemics

  • The 1918 Influenza Pandemic killed millions, as did the ongoing HIV/AIDS crisis, which has significant treatment advancements but remains a global health challenge.

  • Ebola first appeared in 1976, causing severe illness and mortality.

Diseases Related to Longevity

  • Heart Disease affects many due to genetics and lifestyle changes; significant advancements include heart transplants.

  • Alzheimer's Disease affects many elderly individuals, leading to memory loss and eventually death, without a current cure.