| Substance | Condition | Seq | Src | PMID | Dtl | Title |
| Vitamin A | Acute Respiratory Infection | 1 | PM | 10390287 | 📋 | The beneficial effects of weekly low-dose vitamin A supplementation on acute lower respiratory infections and diarrhea in Ecuadorian children |
| Vitamin A | COVID-19 Infection | 6 | PM | 37170443 | 📋 | The association between nutrients and occurrence of COVID-19 outcomes in the population of Western Iran: A cohort study |
| Vitamin A | COVID-19 Infection | 5 | PM | 36786260 | 📋 | Baseline serum vitamin A and vitamin C levels and their association with disease severity in COVID-19 patients |
| Vitamin A | COVID-19 Infection | 4 | PM | 36276889 | 📋 | Role of Vitamin A Supplementation in Prevention and Control of Coronavirus Disease-19: A Narrative Review |
| Vitamin A | COVID-19 Infection | 3 | PM | 35664529 | 📋 | Retinol Depletion in COVID-19 |
| Vitamin A | COVID-19 Infection | 2 | PM | 33468263 | 📋 | Vitamin A in Resistance to and Recovery from Infection: Relevance to SARS-CoV2 |
| Vitamin A | COVID-19 Infection | 1 | PM | 33382930 | 📋 | Mega doses of retinol: A possible immunomodulation in Covid-19 illness in resource-limited settings |
| Vitamin A | Infectious Disease | 1 | PM | 16053249 | 📋 | The role of cathelicidins in the innate host defenses of mammals |
| Vitamin A | Infectious Disease | 2 | PM | 10604208 | 📋 | Vitamin A and immunity to viral, bacterial and protozoan infections |
| Vitamin A | Influenza | 2 | PM | 32959872 | 📋 | Vitamin A deficiency dysregulates immune responses toward influenza virus and increases mortality after bacterial coinfections |
| Vitamin A | Influenza | 1 | PM | 32779401 | 📋 | Vitamin A Corrects Tissue Deficits in Diet-Induced Obese Mice and Reduces Influenza Infection After Vaccination and Challenge |
| Vitamin A | Measles | 2 | PM | 25619709 | 📋 | Severe measles pneumonia in adults with respiratory failure: role of ribavirin and high-dose vitamin A |
| Vitamin A | Measles | 3 | PM | 10213986 | 📋 | [The efficacy of oral vitamin A supplementation for measles and respiratory syncytial virus (RSV) infection] |
| Vitamin A | Measles | 1 | PM | 1285727 | 📋 | Vitamin A levels and severity of measles. New York City |
| Vitamin A | Otitis media | 1 | PM | 19460262 | 📋 | Nutritional factors in the pathogenesis of ear disease in children: a systematic review |
| Vitamin A | Respiratory Tract Infection | 5 | PM | 38250588 | 📋 | Recurrent respiratory tract infections in children might be associated with vitamin A status: a case-control study |
| Vitamin A | Respiratory Tract Infection | 4 | PM | 35984160 | 📋 | Recurrent respiratory infections and vitamin A levels: a link? It is cross-sectional |
| Vitamin A | Respiratory Tract Infection | 3 | PM | 35004539 | 📋 | Association Between Serum Vitamin A Levels and Recurrent Respiratory Tract Infections in Children |
| Vitamin A | Respiratory Tract Infection | 1 | PM | 32779401 | 📋 | Vitamin A Corrects Tissue Deficits in Diet-Induced Obese Mice and Reduces Influenza Infection After Vaccination and Challenge |
| Vitamin A | Respiratory Tract Infection | 2 | PM | 8542002 | 📋 | Vitamin A and respiratory syncytial virus infection. Serum levels and supplementation trial |
| Vitamin A | Viral Infection | 2 | PM | 36235733 | 📋 | What Are the Effects of Vitamin A Oral Supplementation in the Prevention and Management of Viral Infections? A Systematic Review of Randomized Clinical Trials |
| Vitamin A | Viral Infection | 1 | PM | 28727498 | 📋 | New perspectives regarding the antiviral effect of vitamin A on norovirus using modulation of gut microbiota |
