negatively regulates negative regulation of cytokine production type III interferon production regulation of type III interferon production negative regulation of type III interferon production GO:0034345 downregulation of type III interferon production Any process that stops, prevents, or reduces the frequency, rate, or extent of type III interferon production. Interferon lambda is the only member of the type III interferon found so far. biological_process inhibition of type III interferon production negative regulation of type III IFN production down-regulation of type III interferon production Note that IL-28A, IL-28B, and IL-29 are types of interferon-lambda. down regulation of type III interferon production biological regulation