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The Human Immunodeficiency Virus (HIV), CD4+ T lymphoctyes and AIDS

Human immunodeficiency virus (HIV) infection results from 1 of 2 similar retroviruses (HIV-1 and HIV-2) that destroy CD4+ T lymphocytes and impair cell-mediated immunity, increasing risk of certain infections and cancers.

A Physician Travels to South Asia Seeking Enduring Lessons From the Eradication of Smallpox

Smallpox was certified eradicated in 1980, but I first learned about the disease’s twisty, storied history in 1996 while interning at the World Health...

Main Cause of Death in Infants Ages Zero to Five in Low-Income Countries; Hope for a Better Future

Hope shines through the veil of despair with low-cost, effective interventions that can significantly reduce the number of deaths among infants aged 0 to 5.

Some Fully Vaccinated People Are Getting COVID

A friend of mine in Florida got vaccinated three months ago. He has been battling COVID-19 for more than a week now. He describes...