1 07/02/2015 Airport Authority adopts resolution to facilitate permitting for ride sharing at San Diego... 2  Read More. 3  06/19/2015 Airport Authority named âSustainability Champion of the Yearâ by North San Diego Business ...
The age of viability refers to the period of time when the developing fetus is able to survive outside of its motherâs womb. Generally, the age of viability of a fetus is considered to be between 22 and 26 weeks after conception. Survival of a child born prior to the full gestational age (40 weeks) improves greatly during the third trimester. The survival rates at different times during the age of variability are as follows: 21 weeks or less: survival rate is 0%.
1 A packet that is between 4 - 6 months old may need to be activated 2 days or more in advance.  A yeast that has been mail-ordered my not retain complete yeast viability for the full six months. For example, you receive a Wyeast smack pack that is fresh (1 month old). However, the yeast sat in the shipping box without an ice pack at room temperature or warmer for 4 - 5 days. The yeast will still be alive, but you should not expect it to retain viability for the next five months.