When do people go senile?

In ten years the plague had killed over how many o Europe's population? What do you need to prevent cold sore? What is an individual called who is infected with pathogens but shows no sign of illness? How do you prevent from getting worse of asthma? Can spicy food cause seizures? Does histamine cause swelling? Does concentric movement shorten the muscle? When taking blood pressure the first tapping sound heard is recorded is the first sound systolic or diastolic? What is the taxonomy of the Ebola virus? What best describes puberty? Why is the average human body temperature 37 degrees while Earth's average climate varies by region? Why encephalitis and meningitis are difficult to treat? Can people with a mental illness function in society? What disorder can cause a high fever stiff neck and headache? What is the most unknown deadly disease? Which part of a donors's eye can be transplanted in other's? Who is the Have a happy period voice? Why does crisps make you feel sick? Can having a cold affect your unborn baby we are 17 and 19? Why does all your food turn to diarrhea?