The Lancet: Vaccines against 10 diseases prevented 37 million deaths in low- and middle-income countries in the last 20 years 

2 February 2021- Vaccine programmes in low- and middle-income countries have prevented 37 million deaths in the last 20 years alone – 36 million of which would have been in children aged under-five. These are the findings of the most comprehensive study of the impact of vaccination programmes yet undertaken, published in The Lancet.

The research, led by The Vaccine Impact Modelling Consortium (www.vaccineimpact.org), shows the success is predicted to continue, with a further 32 million deaths predicted to be prevented by vaccination programmes by 2030 (28 million deaths prevented in under-5s), if progress is sustained.
 
These estimates focused on deaths averted by vaccination against 10 diseases in 98 low-and middle-income countries, in the period 2000-2030. These countries include over two thirds of the world’s population. The 10 diseases in question were hepatitis B, Haemophilus influenzae type b (Hib), human papillomavirus (HPV), Japanese encephalitis, measles, meningitis A (Neisseria meningitidis serogroup A), pneumococcal disease (Streptococcus pneumoniae), rotavirus, rubella, and yellow fever.

The Lives Saved Tool was one of the models used to calculate the impact of Hib, Pneumococcal and Rotavirus vaccines in reducing meningitis, pneumonia, and diarrhea mortality and morbidity.

A data visualisation tool is available at https://montagu.vaccineimpact.org/2020/datavis.