Contagious

Can catch it from the shadows,
Can catch it from the air,
Can catch it from a silver strand of some old lady's hair,
Can catch it just from breathing,
Can catch it with one breath,
First interaction builds the traction,
You have caught your death,
A little, maybe,
Some, a lot,
To coffin,
Coffin, from a cot,
Life as the symptom,
Birth as cause,
Death as disease,
A triggered pause,
There is no cure,
For this disease,
If you want life,
You pay the fees.