serum or plasma zinc concentration data are available for the following countries 

Afghanistan — National Nutrition Survey Afghanistan (2013) Survey Report
Azerbaijan Nutrition Survey 2013 
Bangladesh — National Micronutrients Status Survey 2011-12 – Final Report
Bolivia — data coming
Cambodia — Cambodia Demographic and Health Survey – 2014 ; zinc data coming soon
Cameroon — Stunting Prevalence, Plasma Zinc Concentrations, and Dietary Zinc Intakes in a Nationally Representative Sample Suggest a High Risk of Zinc Deficiency among Women and Young Children in Cameroon
China — data coming
Colombia —  Factores asociados a la deficiencia de zinc en niños colombianos; resultados de la Encuesta Nacional de Salud 2010; estudio transversal 
Ethiopia — data coming
Fiji   Impact of Iron Fortified Flour in Child Bearing Age (CBA) Women in Fiji 2010 Report
Guatemala — data coming
India — samples being collected 2016-2017
Kenya —  Anaemia and Status of Iron, Vitamin A and Zinc in Kenya – The 1999 National Survey Report
Kuwait — Reference Ranges of Copper and Zinc and the Prevalence of Their Deficiencies in an Arab Population Aged 15-80 Years
Malawi — data coming
Maldives — Project Report National Micronutrient Survey 2007 Republic of Maldives
Mexico — Anemia and iron, zinc, copper and magnesium deficiency in Mexican adolescents: National Health and Nutrition Survey 2006 ; Prevalence of Zinc Deficiency in Mexican Children and Women of Childbearing Age (abstract);  Iron, zinc, copper and magnesium nutritional status in Mexican children aged 1 to 11 years ; Iron, zinc, copper and magnesium deficiencies in Mexican adults from the National Health and Nutrition Survey 2006
Myanmar — samples being collected 2016-2017
Nepal — data coming
Nigeria Nigeria Food Consumption and Nutrition Survey 2001-2003: Summary
Pakistan — National Nutrition Survey Pakistan 2011 ; Evaluation of Zinc Status and Community Perceptions in Pakistan: The National Nutrition Survey 2011 (abstract)
Philippines— 7th National Nutrition Survey, Philippines 2008: Serum Zinc Levels in Selected Filipino Population Groups
Senegal— Statut en Zinc des Enfants Senegalais et Evaluation de L’Utilisation de la Concentration Plasmatique en Zinc pour Tester L’Impact des Programmes de Fortification ; Adjusting Plasma Concentrations of Ferritin, Retinol, and Zinc Affect the Prevalence of Micronutrient Deficiencies in Children but Not in Women (abstract); 
South Africa — The National Food Consumption Survey (NFCS): South Africa, 1999
Sri Lanka — National Nutrition and Micronutrient Survey – Part II: Iron, Zinc and Calcium Deficiency Among Children Aged 6-59 Months
Vietnam — Micronutrient Deficits Are Still Public Health Issues among Women and Young Children in Vietnam