IN the background of the ravaging pandemic and stories of helplessness in getting vaccines, oxygen beds, medicines, Sitaram Yechury, general secretary of the CPI(M) wrote a letter to the prime minister on April 24, 2021 demanding his immediate intervention.Below we present the text of the letter:I am writing to you in great pain, distress, and anguish. This unprecedented health and humanitarian crisis created by the second wave of Covid-19 is turning into a tsunami. The situation has been aggravated by the approach and attitude of the union government.