Table 1.

Search strategy for articles on ALRTIs among children under five in SSA

Search strategy item
Databases	PubMed, JSTOR, Central, Web of Science
Language filter	English Language
Time filter	2010 -2022
Spatial filter	Sub-Saharan African Countries Angola OR Benin OR Botswana OR Burkina Faso OR Burundi OR Cape Verde OR Cameroon OR Central African republic OR Chad OR Comoros OR Congo OR DR, Congo OR Coted’Ivoire OR Equatorial Guinea OR Eritrea OR Eswatini OR Ethiopia OR Gabon OR Gambia Ghana OR Guinea OR Guinea Bissau OR Kenya OR Lesotho OR Liberia OR Madagascar OR Malawi OR Mali OR Mauritania OR Mauritius OR Mozambique OR Namibia OR Niger OR Nigeria OR Rwanda OR Sao Tome & Principe OR Senegal OR Seychelles OR Sierra Leon OR Somalia OR South Africa OR South Sudan OR Sudan OR Tanzania OR Togo OR Uganda OR Zambia OR Zimbabwe
Keywords	1. Acute Lower Respiratory Infection OR Respiratory Infection OR Lower Respiratory Tract Infection OR Pneumonia OR Influenza OR Whooping Cough OR Acute Bronchitis OR Bronchiolitis 2. Children under Five Years OR Infants OR Neonates OR Early Childhood OR Children 3. Prevalence OR Percentage of Diseases or Proportion 4. Risk Factors OR Causes OR Determinants OR Exposure 5. Interventions OR Policies or Strategies OR Protection
Inclusion criteria	The paper should be: 1. A peer-reviewed or Gray Literature; 2. published from 2010 to 2022; 3. conducted in sub-Saharan African countries; 4. published in the English language; 5. conducted on children under five years, 6. on Prevalence, Risk Factors or Interventions, any of these three outcomes
Exclusion criteria	The paper should be 1. reviews, reports, abstracts, minutes, commentaries, letters to editors, and preprints 2. conducted on children above five years, 3. conducted in countries outside sub-Saharan Africa; 4. studies published online before the year 2010