1 There are large areas of tundra in northern North America, northern Europe, and northern Asia. 2  The word tundra comes from a Finnish word tunturi, which means treeless plain or barren land. 3  The tundra is a very fragile biome that is shrinking as the permafrost melts. There are large areas of tundra in northern North America, northern Europe, and northern Asia. 2  The word tundra comes from a Finnish word tunturi, which means treeless plain or barren land. 3  The tundra is a very fragile biome that is shrinking as the permafrost melts.
Although the CDC states that pregnant women are 20 times more likely to become infected than non-pregnant healthy adults, the number of cases of listeriosis in pregnant women is about 17% . Symptoms of listeriosis may show up 2-30 days after exposure. Symptoms in pregnant women include mild flu-like symptoms, headaches, muscle aches, fever, nausea, and vomiting. If the infection spreads to the nervous system it can cause stiff neck, disorientation, or convulsions.
1 Not all women experience the same symptoms of pregnancy, and symptoms vary in severity. 2  A woman will not necessarily experience the same symptoms in the same way in subsequent pregnancies as with her first pregnancy. 3  Certain symptoms, like absence of menstruation and weight gain, are common to all pregnancies.