<span style="color: #222222;">Health Minister Mansukh Mandaviya has congratulated all the scientists, health workers, and countrymen on completion of one year of vaccination drive. In a tweet, Mr Mandaviya said, today the world's largest vaccination campaign completes one year. He said, this campaign started under the leadership of Prime Minister Narendra Modi with efforts of everyone is the most successful vaccination campaign in the world today. </span><br />