Washington:
US health officials have said the number of confirmed cases of swine flu had risen to 141, spread across 19 states.
Delaware with four cases, Illinois (3), Kentucky (1) and Virginia with two cases were all added to the list drawn up by the Centers for Disease Control and Prevention (CDC).
Only one person has so far died from catching the H1N1 flu virus: a Mexican toddler who was visiting relatives in Texas.
The numbers of infected people have been relatively stable in the first states to confirm cases, with New York having the highest tally of 50 which has remained the same for several days.
Texas has 28 cases, two more than recorded on Friday, while in California, the numbers of infected people dropped by one to 13.
South Carolina, however, had overtaken California as the third worst affected state with 16 cases now confirmed, up from 10 today.
States with confirmed cases of swine flu: Arizona (4), California (13), Colorado (2), Delaware (4), Illinois (3), Indiana (3), Kansas (2), Kentucky (1), Massachusetts (2), Michigan (2), Minnesota (1), Nebraska (1), Nevada (1), New Jersey (5), New York (50), Ohio (1), South Carolina (16), Texas (28) and Virginia (2).