[1] Sefako Makgatho Hlth Sci Univ, Publ Hlth Pharm & Management, Pretoria, South Africa
[2] Sefako Makgatho Hlth Sci Univ, South African Vaccinat & Immunisat Ctr, Pretoria, South Africa
[3] Directorate Child Youth, Natl Dept Hlth, Pretoria, South Africa
[4] Sch Hlth, Pretoria, South Africa
[5] Greys Hosp, Dept Med, Pietermaritzburg, South Africa
[6] Univ Cape Town, Div Infect Dis & HIV Med, Groote Schuur Hosp, Cape Town, South Africa
[7] Stellenbosch Univ, Dept Biomed Sci, Cape Town, South Africa
[8] South African Hlth Prod Regulatory Author, Pharmacovigilance, Pretoria, South Africa
[9] Univ Witwatersrand, Resp & Meningeal Pathogens Res Unit, Johannesburg, South Africa
[10] Sefako Makgatho Hlth Sci Univ, Paediat & Child Hlth, Pretoria, South Africa
[11] Univ KwaZulu Natal, Dept Paediat & Child Hlth, Durban, South Africa
[12] Natl Inst Communicable Dis, Div Publ Hlth Surveillance & Response, Johannesburg, South Africa
[13] Univ Cape Town, Div Allergol & Clin Immunol, Dept Med, Cape Town, South Africa
[14] South African Hlth Prod Regulatory Author, Pretoria, South Africa