Fever in Children. A fever is defined by most doctors as a temperature of 100.4 degrees Fahrenheit (38 degrees Celsius) and higher. The body has several ways to maintain normal body temperature.
As in many other cultures, a person may informally use a nickname (pseudonim, ksywa) or instead of a given name. In 2009, the most popular female names in Poland were Anna, Maria, and Katarzyna (Katherine). The most popular male names were Piotr (Peter), Krzysztof (Christopher), and Andrzej (Andrew).
However, it is still is one of the most common names. In 2015, about 3% of the boys are given this name. It is also the most common name of Dutch players in the national team. The other most popular first names for males are Piet, Wim and Henk. Seldom, the name Jan is given to a girl.