[TerranC]

The idea that a simple sick bay would cure a plague that is ravaging an entire colony of at least 34 million is unlikely, IMHO.

What I think should happen is:

3 types of plagues depending on their method of infection

Spreads by air/food/water spreads the fastest
Spreads by Touch the next
STD (Maybe... I don't know.) the Last

Then there would be 3 types of cures BASED on the sick bay component:

Sick bay cures all 3 at basic level 1-10%
Antibiotics cures Air at 10-100% must have SB to work
Chemicals cure STD at 10-100% must have SB to work
Physiotherapy cure Touch 10-100% must have SB to work

and contagion should work if there are no military ships in the system, but the rate should be increased with any transport, yours or others.

If there are military ships in the system, they work to stop the disease by:

if garrisoned on a planet, blocks that planet and moon(S) ONLY

If garrisoned on the infected planet(S) they stop the contagion for the entire empire

Just my 2 cents