10 Diseases That Used to Be Death Sentences

A doctor examines a chest x-ray of a child with severe pneumonia at the Oscar Danilo Rosales Hospital on July 31, 2009 in Leon, Nicaragua. Brent Stirton/Getty Images For Save the Children

Pneumonia is sneaky, to say the least. It often strikes in the midst of another illness, like bronchitis or the flu. But it's a lot less of a death sentence than it used to be. In 1900, it was the No. 1 cause of death in the U.S. In 2006, pneumonia was the eighth most common cause of death, along with influenza [sources: American Lung Association and CDC].

Caused by fungi, bacteria, viruses or other small germs, pneumonia occurs when said germs reach and infect one or both lungs [source: American Lung Association]. Although it is typically treatable, pneumonia is sometimes difficult to get under control, and can cause difficulty breathing, lung abscess and other complications. Bacteria can also invade the bloodstream, potentially causing organ failure [source: Mayo Clinic]. Experts typically advise high-risk groups, particularly people over age 65, to be vaccinated to prevent getting sick or experiencing complications [source: CDC].

Author's Note: 10 Diseases That Used to Be Death Sentences

In a perfect world, everyone would have access to the prevention and treatment methods that are so effective against these diseases. I applaud public health advocacy groups for continuing the frustratingly slow trek toward providing underdeveloped countries with the medical marvels we often take for granted.

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  • American Lung Association. "Pneumonia Fact Sheet." 2014 (July 29, 2014) http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4829a1.htm
  • American Lung Association. "Understanding Pneumonia." 2014 (July 24, 2014) http://www.lung.org/lung-disease/pneumonia/understanding-pneumonia.html
  • amfAR. "Basic Facts About HIV/AIDS." 2014 (July 22, 2014) http://www.amfar.org/About-HIV-and-AIDS/Basic-Facts-About-HIV/
  • Basak, Sonali and Jennifer Oldham. "Four Cases of Life-Threatening Plague Found in Colorado." Bloomberg. July 19, 2014 (July 22, 2014) http://www.bloomberg.com/news/2014-07-18/four-cases-of-life-threatening-plague-found-in-colorado.html
  • Brown University. "Syphilis." 2014 (July 23, 2014) http://brown.edu/Student_Services/Health_Services/Health_Education/sexual_health/sexually_transmitted_infections/syphilis.php
  • Centers for Disease Control and Prevention (CDC). "Achievements in Public Health..." July 30, 1999 (July 29, 2014) http://www.cdc.gov/mmwr/preview/mmwrhtml/mm4829a1.htm
  • Centers for Disease Control and Prevention. "Cervical Cancer Statistics." 2014 (July 29, 2014) http://www.cdc.gov/cancer/cervical/statistics/
  • Centers for Disease Control and Prevention. "HIV in the United States: At a Glance." 2014 (July 22, 2014) http://www.cdc.gov/hiv/statistics/basics/ataglance.html
  • Centers for Disease Control and Prevention. "Morbidity and Mortality Weekly Report." July 30, 1999 (July 29, 2014) http://www.cdc.gov/mmwr/PDF/wk/mm4829.pdf
  • Centers for Disease Control and Prevention. "Pneumococcal Vaccination." 2014 (July 23, 2014) http://www.cdc.gov/VACCINES/vpd-vac/pneumo/default.htm
  • Centers for Disease Control and Prevention. "Rabies: What care will I receive?" 2014 (July 22, 2014) http://www.cdc.gov/rabies/medical_care/index.html
  • Centers for Disease Control and Prevention. "Tuberculosis (TB)." 2014 (July 22, 2014) http://www.cdc.gov/tb/
  • Centers for Disease Control and Prevention. "What is HIV?" 2014 (July 29, 2014) http://www.cdc.gov/hiv/basics/whatishiv.html
  • Centers for Disease Control and Prevention. "Who's at Risk for HIV?" 2014 (July 22, 2014) http://www.cdc.gov/hiv/risk/index.html
  • Cohen, Jennie. "Did Blood Cause Henry VII's Madness and Reproductive Woes?" March 4, 2011 (July 23, 2014) http://www.history.com/news/did-blood-cause-henry-viiis-madness-and-reproductive-woes
  • Flu.gov. "How the Flu Virus Changes." 2014 (July 23, 2014) http://www.flu.gov/about_the_flu/virus_changes/
  • Flight, Colette. "Smallpox: Eradicating the Scourge." BBC. Feb. 17, 2011. (July 24, 2014) http://www.bbc.co.uk/history/british/empire_seapower/smallpox_01.shtml
  • Ghose, Tia. "Bubonic Plague Still Kills Thousands." Sept. 27, 2013 (July 23, 2014) http://www.huffingtonpost.com/2013/09/27/bubonic-plague-kills-thousands_n_4005495.html
  • Griffin, R. Morgan. "Advances in HIV Treatment: Understanding ART." WebMD. 2014 (July 22, 2014) http://www.webmd.com/hiv-aids/features/hiv-aids-treatment-advances-art
  • Haynes, Benjamin N. Senior press officer, Centers for Disease Control and Prevention. E-mail interview, July 23, 2014.
  • History. "Black Death." 2014 (July 22, 2014) http://www.history.com/topics/black-death
  • Mayo Clinic. "Rabies: Causes." 2014 (July 22, 2014) http://www.mayoclinic.org/diseases-conditions/rabies/basics/causes/con-20019900
  • Mayo Clinic Staff. "Pneumonia Complications." 2014 (July 23, 2014) http://www.mayoclinic.org/diseases-conditions/pneumonia/basics/complications/con-20020032
  • National Cancer Institute. "Human Papillomavirus (HPV) Vaccines." 2014 (July 23, 2014) http://www.cancer.gov/cancertopics/factsheet/prevention/HPV-vaccine
  • National Institute of Allergy and Infectious Diseases. "Malaria: Symptoms." 2014 (July 23, 2014) http://www.niaid.nih.gov/topics/malaria/understandingmalaria/pages/symptoms.aspx
  • National Institute of Allergy and Infectious Diseases. "Toxic Traces: What Made the 1918 Influenza Virus So Deadly?" 2014 (July 23, 2014) http://www.niaid.nih.gov/topics/flu/research/pandemic/pages/toxictraces.aspx
  • National Institutes of Health. "Cervical Cancer." 2014 (July 29, 2014) http://report.nih.gov/nihfactsheets/viewfactsheet.aspx?csid=76
  • National Institutes of Health. "Tuberculosis." 2014 (July 22, 2014) http://report.nih.gov/nihfactsheets/ViewFactSheet.aspx?csid=31
  • Patton, Monica E., et al. "Primary and Secondary Syphilis." Centers for Disease Control and Prevention. May 9, 2014 (July 23, 2014) http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6318a4.htm?s_cid=mm6318a4_w
  • Payne, Daniel C. Ph.D., et al. "Manual for the Surveillance of Vaccine-Preventable Diseases." Centers for Disease Control and Prevention. April 1, 2014 (July 29, 2014) http://www.cdc.gov/vaccines/pubs/surv-manual/chpt13-rotavirus.html
  • Tate, JE, et al. "2008 estimate of worldwide rotavirus mortality in children younger than 5 years before the introduction of universal rotavirus vaccination programmes: a systematic review and meta-analysis." Feb. 12, 2012 (July 23, 2014) http://www.ncbi.nlm.nih.gov/pubmed/22030330
  • The Children's Hospital of Philadelphia. "Vaccine Trivia Corner Archive." 2014. (July 23, 2014) http://www.chop.edu/service/parents-possessing-accessing-communicating-knowledge-about-vaccines/trivia-corner/trivia-archive.html
  • The Henry J. Kaiser Family Foundation. "The HIV/AIDS Epidemic in the United States." April 7, 2014 (July 29, 2014) http://kff.org/hivaids/fact-sheet/the-hivaids-epidemic-in-the-united-states/
  • The Humane Society of the United States. "Understanding Rabies." Sept. 26, 2013 (July 22, 2014) http://www.humanesociety.org/animals/resources/facts/rabies.html
  • World Health Organization (WHO). "Overview of malaria treatment." 2014 (July 23, 2014) http://www.who.int/malaria/areas/treatment/overview/en/
  • World Health Organization. "Plague." 2014 (July 22, 2014) http://www.who.int/topics/plague/en/
  • World Health Organization. "Smallpox." (July 22, 2014)
  • World Health Organization. "Tuberculosis." 2014 (July 22, 2014) http://www.who.int/mediacentre/factsheets/fs104/en/


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