This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Stage in which disease is easily recognized and high titre of antibodies are found: 
Select and explain. 
A. Prodromal stage., B. Fastigium, C. Defervescence stage, D. Convalescence
B: Fastigium
Answer: B: Fastigium 
Explanation: Incubation: This period elapsed from invasion of the tissue by pathogens and appearance of clinical features
Prodromal stages: Signs and symptoms are not specific for disease. Antibody titre is rising
Fastigium: Disease is easily recognized. In this phase high titres (Peak) of antibodies are found
Defervescence stage: Body defense mechanisms dominate and patient feels better
Convalescence (recovery stage): In convalescence the antibody titres decrease. The patients may act as carrier also