Background: The Calcutta High Court has directed the West Bengal government to take steps to prevent dengue fever. Parties: The petitioners were social activists and the respondents were the state government and the health department. Legal issues: The main issue was whether the government had taken sufficient steps to prevent dengue fever. Court observations: The court observed that the government had not taken effective steps to prevent dengue fever and directed them to take immediate action. The court also directed the government to file a report on the steps taken. Significance: The order is significant as it highlights the need for the government to take effective steps to prevent dengue fever. The court's direction will have a bearing on the public health and the prevention of diseases. The case highlights the importance of taking proactive measures to prevent diseases and the need for a coordinated approach to address the issue. The court's observation that the government had not taken effective steps will provide a wake-up call to take immediate action. The case may also have implications for other states, which may face similar challenges in preventing dengue fever.