[X] Bombardment Focus: As it stands you have far too few assets for the safe invasion of another vessel and no idea of the capabilities of this anomalous infection it bears. The safest option in this case would be to fight this ship with direct fire from your main guns and whatever other options you can spare to the fight. (Space focused operation, will only use space assets and will likely leave little to salvage or save. Will roll two rounds of combat per unit to kill it quicker but at the cost of losing whatever might be within. Mutually exclusive with Stalling Focus.)
[X] Stalling Focus: With it being closer to the planets now it may be worthwhile to attempt to prevent its approach more directly, even if it might come at a cost to you. While putting yourself or other forces in the way of its travel should save the planets from their touch its almost certainly going to hurt to do so. (Space focused operation, will only use space assets and will attempt to prevent the ship from advancing deeper into the solar system. Will roll one round of combat per unit and kill it slower while still leaving little for salvage. Mutually exclusive with Bombardment Focus.)