"Dennō Senshi Porygon" literally "Computer Soldier Porygon", although most commonly translated as "Electric Soldier Porygon") is the thirty-eighth episode of the Pokémon anime's first season. Its only broadcast was in Japan on December 16, 1997. The episode is infamous for using visual effects that caused seizures in a substantial number of Japanese viewers, an incident referred to as the "Pokémon Shock" by the Japanese press. Six hundred and eighty-five viewers were taken to hospitals; two people remained hospitalized for more than two weeks. Due to this, the episode has not been rebroadcast worldwide. After the shock, the Pokémon anime went into a four month hiatus, and it returned on TV Tokyo in April 1998.