What do you mean by infectious and communicable diseases? Mention the causative agent and means of spread of filaria. Also describe the symptoms, diagnosis, treatment and preventive measures of filaria.
Infectious diseases are caused by pathogenic microorganisms such as bacteria, viruses, fungi, or parasites that multiply within the host. Not all infectious diseases are communicable. For example, tetanus is infectious but is acquired through wounds rather than person-to-person transmission. Communicable diseases are a subset of infectious diseases that can spread directly, such as through contact or respiratory droplets, or indirectly, via contaminated food, water, or vectors like mosquitoes. Therefore, while all communicable diseases are infectious, not all infectious diseases are communicable.
Filaria is a parasitic disease caused by thread-like nematode worms, mainly affecting the lymphatic system and leading to lymphatic filariasis.
Causative Agents:
Transmission:
Filarial worms are transmitted through infected mosquitoes:
Mosquito bites deposit larvae on the skin, which enter the lymphatic system, mature into adult worms, and produce microfilariae in the blood, mainly at night.
Symptoms:
Diagnosis:
Treatment:
Prevention:
Effective filaria control focuses on interrupting transmission, reducing morbidity, and preventing long-term disability, ensuring healthier communities.
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Metagenesis
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Metagenesis
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Book lungs
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Paedomorphosis