Your family is planning to travel to another city where malaria is prevalent. (i) What precautions should you take before, during, and after the trip? (ii) How can you explain the importance of mosquito nets or repellents to your sibling? (iii) What could happen if travellers ignore health advisories in such areas?
Before the trip, consult a doctor for preventive medication and learn about local health advisories. During the trip, use mosquito nets while sleeping, apply mosquito repellents, wear long-sleeved clothes especially in the evening, avoid areas with stagnant water, and keep windows closed or screened. After the trip, monitor for symptoms like high fever and chills, and seek medical help immediately if symptoms appear.
Mosquito nets and repellents are essential because malaria is transmitted through mosquito bites. Mosquitoes carrying the malaria-causing protozoa bite humans and transfer the pathogen into the blood. Nets create a physical barrier that prevents mosquitoes from reaching the skin while sleeping, and repellents keep mosquitoes away, significantly reducing the risk of infection.
Ignoring health advisories can lead to contracting malaria, which causes high fever, profuse sweating, and periodic chills. Without proper treatment, malaria can become severe and life-threatening. Infected individuals may also spread the disease to others in their community through mosquitoes, creating a larger health crisis.
Explanation
(i) Table 3.1 in the chapter lists preventive measures for malaria including use of mosquito nets and repellents, wearing long-sleeved clothes, and control of mosquito breeding in and around the home. (ii) The chapter explains that malaria is caused by protozoa and transmitted by mosquitoes. The preventive measures listed include using mosquito nets and repellents to avoid mosquito bites. (iii) The chapter describes malaria symptoms including high fever, profuse sweating, and periodic chills. Understanding how diseases spread helps us take simple steps to protect ourselves and others.