Calcium's location in the periodic table of the elements. Photo Credit: Todd Helmenstine. Potassium is the 20 th element on the periodic table. It is located in period 4 and group 2.alcium's location in the periodic table of the elements. Photo Credit: Todd Helmenstine. Potassium is the 20 th element on the periodic table. It is located in period 4 and group 2.
The contagious period is the amount of time during which a sick child can give the disease to others. For major illnesses (such as hepatitis), a child will need to stay at home or in the hospital until all chance of spread has passed. For minor illnesses (like the common cold) the guidelines are less strict.
8. The incubation period, or the time interval from infection to onset of symptoms, is from 2 to 21 days. People are not contagious until they develop symptoms. Ebola virus disease infections can only be confirmed through laboratory testing.bola virus disease (formerly known as Ebola haemorrhagic fever) is a severe, often fatal illness, with a death rate of up to 90% caused by Ebola virus, a member of the filovirus family.