Vice President M Venkaiah Naidu today appreciated the role of sanitation workers during the COVID-19 pandemic. In a tweet, Mr. Naidu complimented and appreciated all the sanitation workers across the country for their unwavering commitment to duty and ensuring cleanliness of cities and villages. He said, sanitiation workers have been acting as an important first line of defence in country's battle against COVID-19 pandemic.<br />''  <br />