Zinc supplementation fails to increase the immunogenicity of oral poliovirus vaccine: a randomized controlled trial.

What Was Tested

Researchers studied Vitamin D, K2, Magnesium and Zinc in this randomized controlled trial publication.

To assess the impact of zinc supplementation among infants on immune response to oral poliovirus vaccine (OPV).

Blood samples were similarly collected to determine the antibody response to OPV and for micronutrient analysis.

Logistic regression was used to determine the relationship between seroconversion and zinc status.

Why It Was Studied

Polio eradication remains a challenge in Pakistan and the causes for the failure to eradicate poliomyelitis are complex.

Undernutrition and micronutrient deficiencies, especially zinc deficiency, are major public health problems in Pakistan and could potentially affect the response to enteric vaccines, including oral poliovirus vaccine (OPV).

Who Took Part

By PubMed's age tags, the people studied were infants, both men and women.

Data was collected on prior immunization status, diarrheal episodes, breastfeeding practices and anthropometric measurements at recruitment and at 6 and 18 weeks.

How the Study Was Run

In design terms this was a randomized, double-blind and placebo-controlled study.

Random assignment meant chance, not the researchers, decided who got Vitamin D, K2, Magnesium and Zinc and who got the comparison, which limits bias.

Neither the participants nor the staff measuring them knew who was on Vitamin D, K2, Magnesium and Zinc, so expectations could not easily colour the readings.

A placebo (an inactive look-alike) gave the Vitamin D, K2, Magnesium and Zinc group a baseline to be compared against.

A double-blind, randomized placebo-controlled trial was conducted in newborns (aged 0-14 days).

What Was Measured

PubMed files the paper under topics including Antibodies, Viral, Dietary Supplements, Logistic Models, Pakistan, Poliomyelitis, Poliovirus and Poliovirus Vaccine, Oral.

Author keywords: Randomized controlled trial, Vaccine response and Zinc supplementation.

What This Means in Plain Language

The paper is a randomized, double-blind and placebo-controlled study of Vitamin D, K2, Magnesium and Zinc.

Its findings take up roughly 6 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2015 (Vaccine), a journal based in Netherlands.

More context: the Vitamin D, K2, Magnesium and Zinc compound page, all human trials.