Task: Translation
Input (Japanese): ユシチェンコが10月6日に病気にかかったとき、ウクライナの医者は最初は食中毒と診断し、その後、彼が故意に毒殺されたという推測に至った。
Output (English): When Yushchenko fell ill on October 6th, Ukrainian doctors had initially diagnosed food poisoning, leading to speculation that he had been poisoned deliberately.