SciTech Express

Lumpy Skin Disease (LSD) – A Detailed Overview 1. About Lumpy Skin Disease (LSD) Lumpy Skin Disease (LSD) is a contagious viral disease that affects cattle and buffaloes . It is caused by the Lumpy Skin Disease Virus (LSDV) , belonging to the Capripoxvirus genus in the Poxviridae family . The disease leads to severe economic losses in the livestock industry due to decreased milk production, weight loss, and trade restrictions. 2. Causes & Transmission Pathogen : Lumpy Skin Disease Virus (LSDV). Mode of Transmission : Vector-borne transmission : Spread by blood-feeding insects , such as: Flies (Stomoxys species) Mosquitoes (Aedes and Culex species) Ticks (Rhipicephalus and Amblyomma species) Direct Contact : Through infected animals. Contaminated feed, water, or equipment . Aerosol transmission (rare but possible in crowded conditions). 3. Symptoms of Lumpy Skin Disease Fever (40–41.5°C). Large firm nodules (2-5 cm in diameter) on the skin, covering the head, neck, limbs, u...

Bird Flu (Avian Influenza): A Global Concern   Recent Development: A new genotype (D1.1) of Bird Flu virus has been detected in dairy cattle in the US . Previously, all detections in cattle were of genotype B3.13 . This highlights the evolving nature of the Avian Influenza virus and its ability to infect new hosts. About Bird Flu (Avian Influenza) 1. Causative Agent: Bird Flu is caused by Avian Influenza Type A virus . The virus is divided into subtypes based on two surface proteins : Hemagglutinin (HA) – Helps the virus attach to host cells. Neuraminidase (NA) – Helps the virus spread between cells. 2. Transmission and Carriers: Migratory wild birds , especially waterfowl (ducks, geese, swans), act as natural reservoirs . The virus spreads through direct contact with infected birds or contaminated environments . 3. Human Infections: Some subtypes, like H5N1, H7N9, and H5N6 , have infected humans. Transmission occurs through contact with infected birds, poultry products, or ...