Disease Symptom A. Typhoid 1. Chronic inflammation of lymphatic vessels B. Pneumonia 2. Intestinal perforations C. Filariasis 3. Chill and high fever recurring every 3-4 days D. Malaria 4. Alveoli filled with fluid

Step-by-step solution

Typhoid is a bacterial infection caused by Salmonella typhi that can lead to serious complications like intestinal perforations. Pneumonia is an infection of the lungs where alveoli get filled with fluid, causing breathing difficulties. Filariasis is caused by filarial worms and leads to chronic inflammation of lymphatic vessels, often resulting in elephantiasis. Malaria is a parasitic infection caused by Plasmodium species, characterized by chills and high fever recurring every 3-4 days.