5 deadliest diseases that world has ever witnessed

As we face the Coron avirus pandemic, we look back on vaccines that changed the deadly impact of 5 diseases(including corona).
credits:
https://www.africanleadershipmagazine.co.uk/africa-moves-a-step-closer-to-polio-eradication-united-nations/

https://pixnio.com/de/wissenschaft/mikroskopische-aufnahmen/getriebe-elektronenmikroskopische-aufnahme-negative-fleck-bild-polio-virus#

https://upload.wikimedia.org/wikipedia/commons/c/cf/Wellcome_polio_vaccine_Wellcome_L0033971.jpg

https://upload.wikimedia.org/wikipedia/commons/1/13/Spanish_flu_hospital.png
https://pixnio.com/vintage-photography/nigerien-child-is-receiving-a-smallpox-vaccination#

https://upload.wikimedia.org/wikipedia/commons/f/f2/Smallpox_epidemic%2C_Palestine%3B_a_boy_covered_with_smallpox_pu_Wellcome_L0032734.jpg

https://upload.wikimedia.org/wikipedia/commons/b/b8/Edward_Jenner_vaccinating_patients_against_smallpox_Wellcome_V0011069.jpg

https://commons.wikimedia.org/wiki/File:Obsolescent_variolous_lesions,_smallpox_Wellcome_L0032960.jpg

https://commons.wikimedia.org/wiki/File:Edward_Jenner._Oil_painting._Wellcome_V0023503.jpg

https://www.pakistantoday.com.pk/2018/01/15/six-day-polio-campaign-to-start-on-jan-22-implementation-plan-reviewed/

https://www.insider.com/bill-gates-polio-eradication-2018-learnings-2018-12

https://pixnio.com/de/wissenschaft/medizin/medizinische-evakuierung-zaire-im-verdacht-ebola-patient

https://www.wsj.com/articles/ebola-is-now-a-disease-we-can-treat-how-a-cure-emerged-from-a-war-zone-11572446873

https://www.npr.org/sections/thetwo-way/2014/11/17/364669755/ebola-patient-being-treated-at-nebraska-hospital-has-died

https://ls.usembassy.gov/lesothos-new-directive-on-coronavirus-international-arrivals-now-asked-to-self-isolate-for-14-days/

https://www.sbs.com.au/news/india-passes-500-000-coronavirus-cases-after-daily-leap-of-nearly-20-000-infections

https://elemental.medium.com/what-its-like-to-go-into-lockdown-for-the-second-time-97f4d3bcdb5b

https://vki.at/corona-tests-arten-kosten-grenzen

https://www.augsburger-allgemeine.de/panorama/Das-Wunder-von-Mattia-Maestri-Italiens-Corona-Patient-Nr-1-id57263876.html

https://www.bungalowparkzuiderzee.de/corona-virus

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