What unit of measure would be used to measure the thickness of a leaf? the basic measure of length used to measure the thckness of a pin or leaf is in millimeter Edit
Q: When is someone who has the flu contagious? Some people who are infected with the influenza virus can actually transmit the illness before they begin to feel any symptoms. Most of the time, you will become contagious about 24 to 72 hours after contracting the influenza virus and remain that way for up to five days after the onset of symptoms. But children or people with compromised immune systems can be contagious to those around them for up to two weeks. Flu is most commonly spread by coming into contact with respiratory moisture droplets from an infected person through sneezing or coughing.
Quick Answer. Symptoms of the flu usually last for seven to 14 days, with the individual being contagious beginning a day before symptoms appear through the first week of the flu, according to Flu.gov. Young children and adults with weakened immune systems sometimes remain contagious longer.