6. Zika virus infection, a zoonotic disease, produced somewhat sizable outbreaks recently in certain areas of Central America, but not in the U. S (although there were some infected individuals uncovered in the U. S.). Provide two plausible explanations for this dichotomy and explain.

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells

it takes hundreds of years to become stable.

if you have another question lmk.

when it is at an intermediate population density