Volume s1-29, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



  • 1.  Neutralization tests on 21 Filipino civilians for Japanese B encephalitis showed 7 with positive indices or 33.3 per cent.
  • 2.  Fourteen of the 17 Japanese prisoners of war whose sera were tested gave positive indices or 82 per cent. These indices were higher than those in the Filipino group.
  • 3.  Fourteen of 29 cattle gave positive indices or 45 per cent; 21 of 23 horses or 91 per cent; 10 of 11 carabaos or 90 per cent and 2 of 8 goats or 25 per cent gave positive neutralization indices.
  • 4.  Serial specimens from 13 patients suspicious for Japanese B encephalitis virus infection were obtained and tested. Five of these serial specimens showed a tenfold or greater increase of neutralizing antibodies.


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