"The diet quality in newcomer children is not that good,"

"36% of refugee children and 23% of immigrant children were also lacking sufficient zinc in diets"
https://www.cbc.ca/.../sask-immigrant-dietary-problems-1...

Haug 2007:
Selenium deficiency is regarded as a major health problem for 0.5 to 1 billion people worldwide, while an even larger number may consume less selenium than required for optimal protection against cancer, cardiovascular diseases and severe infectious diseases including HIV disease.

Papadimitriou 2017:
Actions are urgently needed to protect the global population from vitamin D deficiency.
https://www.ncbi.nlm.nih.gov/pubmed/28768407

Bhullar 2017:
"Widespread malnutrition … among Nunavut’s TB patients is a major challenge towards Canada’s goal for TB elimination"
https://nunatsiaq.com/.../65674food_vitamins_could_help.../

"A randomized, double-blind, placebo-controlled trial of micronutrients (vitamins A, B-complex, C, E, and selenium) in TB-HIV co-infected Tanzanian patients showed that these micronutrients decreased the risk of TB recurrence by 45% overall" [Bhullar 2017]