International and domestic silver prices reversed gains made in the Monday afternoon trade after the COVID vaccine news. : Curated markets data, exclusive trading recommendations, Independent equity analysis & actionable investment ideas Precious metal prices came under intense selling pressure after Pfizer reported that its experimental COVID-19 vaccine is found to be more than 90 percent effective in preventing the novel coronavirus infection. The pharma major is getting ready to file an emergency use application with US regulators later this month.