Rank | Africa | Eastern | Western | Central | Southern |

1 | TB (n=9121, median=57) | TB (93%) | TB (37%) | TB (32%) | TB (98%) |

2 | Hepatitis B (n=1195, median=12) | Hepatitis B (6%) | Hepatitis B (11%) | Polio (14%) | Hepatitis B (9%) |

3 | Measles (n=715, median=8) | HPV (5%) | Polio (9%) | Hep. B (12%) | HPV (7%) |

4 | HPV (n=664, median=7) | Measles (5%) | Measles (7%) | Measles (9%) | Rotavirus (9%) |

5 | Dengue/cholera (n=547 and 524, median=z5) | Dengue/cholera (4% each) | Pneumococcus (7%) | Dengue/cholera (9% each) | Measles/pneumococcus(3% each) |

N: total number of papers, median: median number of papers per country.

%: percentage of total vaccine-preventable disease publications relating to specific disease; percentages do not sum to 100% due to overlap between categories.

HPV, human papilloma virus; TB, tuberculosis.