<human>: Can you succinctly summarize the text in 1-3 sentences?

Good evening,

I understand that most of you are not veterinarians, but perhaps you could shed some insight or personal knowledge toward our concerns. My wife and I bought a ragdoll kitten from a registered breeder on Dec 18, 2013. We've had her for 3 weeks now and her "cold" symptoms have not seemed to improve. Here is some relevant information:
- As soon as we got her, her eyes were a tad irritated and quite a lot of sneezing, got a vet appointment the next morning - received antibiotic ointment and 2nd round of booster shots were postponed.
- All visible symptoms after 10 days vanished, however, sneezing persisted.
- Right before new years, sneezing was much more frequent. Regardless, vet proceeded with 2nd round of booster shots. 
- Shortly after new years and until present time, A LOT of sneezing (~30 times a day) and visible yellow discharge from both eyes and nose. The discharge appears to irritate the eyes a tad much like in humans, I use a cotton ball dipped in warm water to rub away some of this discharge.
- We live in a new condo building, but the ventilation system tends to shoot a lot of dust out.

We are not overly concerned about this as the symptoms are, in our eyes, not severe (ie. she is not lethargic, eats well, pees in the right spot, and is incredibly playful). However, these "cold" symptoms have persisted for nearly 3 weeks. My hypothesis is that she was initially fighting a respiratory infection and the 2nd round of booster shot perhaps negatively impacted her immune system causing the sickness to return.
<bot>: cat sneezes a fuckload, may have a cat cold, 2nd round of boosters may have caused her immune system to go derp, cat sick for long time.