If officials wanted to keep the percentage of people infected with polio less than 0.02% of the total population, when would quarantining have had to happen?
Year
U.S. Population
Number of Polio Cases (Estimated)
1938
129,824,939
2,000
1939
130,879,718
7,500
1940
132,122,446
10,000
1941
133,402,471
9,500
1942
134,859,553
4,500
1943
136,739,353
12,100
1944
138,397,345
19,000
1945
139,928,165
13,000
1946
141,388,566
25,500
1947
144,126,071
11,000
1948
146,631,302
28,800
1949
149,188,130
42,000
1950
152,271,417
33,500
1951
154,877,889
29,000
1952
157,552,740
58,500
1953
160,184,192
36,000
1954
163,025,854
39,000
1955
165,931,202
29,000
1956
168,903,031
15,000
