Letters that make case-to-infection proportion
s, a, o, e, f, n, p, c, r, t, i are letters that make 'case-to-infection proportion'
Words within case-to-infection proportion
OR, infection, proportion, ti, PR, PO, EC, SE, Ro, on, pro, port, as, in, ECT, CT, portion, case, prop, AS, CA, IN, Io, ion, Po, As, Ca, In, Fe, Pr, Se, Ti, infect are words within 'case-to-infection proportion'