 
 <prompt> Wetin be di serious term for something wey you no need do with STD? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Infectious diseases sometimes dey call contagious disease wen dem dey easily spread through contact with person wey dey sick or their secretions (e.g., influenza). So, contagious disease na small part of infectious disease wey dey very infective or easy to spread. Other types of infectious/transmissible/communicable diseases wey get specialized ways of infection, like through vectors or sexual transmission, usually no dey classified as "contagious", and dem no dey need medical isolation (wey sometimes dem dey call quarantine) of victims. But, the specific meaning of the word "contagious" and "contagious disease" (easy transmissibility) no dey always respected for popular use. 