I don’t want to kill joy, but there is another virus around. I pray that there is no one like Mary Mallon or Typhoid Mary ---(1869-1938); Asymptomatic Patient Zero. An Asymptomatic Patient Zero, is a person who spreads a disease but shows no signs of infection. Many years ago, Mary Mallon, also known as Typhoid Mary, was an Irish-American cook. She was the first person in the United States who was identified as an asymptomatic carrier of the pathogen associated with typhoid fever. It is suspected that she infected 51 people. Three of them died. Today we are dealing with the Coronavirus. Dear God.