VIRAL DISEASES #gcsebiology #disease #virus #learning #scienceshorts #gcsestudy #youtubeshorts

VIRAL DISEASES – GCSE BIOLOGY IN UNDER A MINUTE Viruses cause infectious diseases by invading and destroying host cells. Here are three viral diseases you need to know: Measles Symptoms: fever and red skin rash Spread: by inhaling droplets from sneezes and coughs It can be serious or fatal if complications occur Most children are vaccinated to prevent it HIV Early symptoms: flu-like illness If untreated, it damages the immune system Late-stage HIV is called AIDS – the body can’t fight infections or cancer Spread by sexual contact or exchange of body fluids, e.g. shared needles Controlled with antiretroviral drugs Tobacco Mosaic Virus (TMV) Affects plants like tomatoes Causes a mosaic pattern on leaves This reduces photosynthesis, stunts growth, and damages crops Exam tip: Remember how each virus is spread, what symptoms it causes, and how it’s controlled or prevented. #GCSEBiology #ViralDiseases #Measles #HIV #TMV #BiologyRevision #ScienceShorts #ExamTips