Related Clues:

• Cause of some shivers
• Fit of shivering
• Mosquito-borne affliction
• See 52 Across
• Symptoms of malaria
• Fluish episodes
• Feverish condition
• Malarial symptoms
• 49-Across symptom
• Shivering spell
• Shakes and the like
• Flu
• Fever attack
• It involves shivering
• Illness