Poliomyelitis surveillance report number 20, May 24, 1955
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Poliomyelitis surveillance report number 20, May 24, 1955

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      Dr. Joseph Melnick, Yale University, New Haven, previously reported isolation of type 1 virus from PSU Case No. Conn-1. He now reports identification of type 1 virus in the stool of a sibling of this patient. Dr.Melnick also notes that a complement fixation test run on serum collected from this sibling several days before the positive stool specimen was collected showed titer against type 1 virus but not against types 2 and 3.

      Dr. Melnick has also grown type 1 virus from the stools of two children who developed minor illnesses with fever and sore throat, 17 and 23 days after inoculation with Cutter vaccine. Complement fixation tests run on serum drawn from both of these children several days prior to the collection of stool specimens for virus isolation were negative.

      A consolidated summary of data on non-paralytic cases is presented in Table 1. Of the 88 vaccinated cases accepted through May 23, four of 60 Cutter associated cases have been classified as non-paralytic. Nine of 19 Lilly associated cases, and one of 8 Wyeth cases have also been so classified* Stool specimens from 10 of these 16 non-paralytic cases have been collected and to date virus isolation from 2 of them has been reported. In addition, virus has been isolated from the contact of one case although repeated efforts to isolate virus from the case have thus far been unsuccessful.

      Four new cases were accepted today. Of these the two Texas cases (ncn-paralytic) and the West Virginia case had received Lilly vaccine. The fourth case (PSU Case No. Del-2) was inoculated with Wyeth vaccine on April 2 and developed paraplegia on May lH. This patient was intimately exposed to a non-vaccinated child who developed bulbar polio on April 20. Vaccinated case5 accepted through 12:00 Noon today (5-21—55) total 92 (Table 2).

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