Before anyone jumps the gun and says that Q dosen't have a thing. This panel has two different interpretation.
One) Is he has no penis, but then why not just say so straight out.
Two) It's clear that Tasa has been thought some kind of sexual assault, and because of it can't have anymore kids, so when Quinlan says what his from was not equipped to proved. It sounds more like he is trying to explain that he is sterile.
I see some fans have an issue with Vaun being tagged under the Quinlan column. Well let me help clear things up. The reason why so many Vaun posts are tagged as Q is because he was the first Quinlan of the show. Introduced in episode seven of season one. He was an immediate hit, so of cures posts were made about him. Fans new to The Strain franchise didn’t know who he was until fans of the books, and interviews with the cast members came out that revealed that he was the much beloved Mr. Quinlan, and of cures fans tagged him as such.
That is way the Quinlan tag is filled with posts about Vaun. For these wondering why new posts of Vaun are appearing in the Quinlan tag, even thoue Vaun has been gone from the show for almost two seasons. That’s easy enough to explain too. For a lot of fans, Vaun was the best interpretation of Quinlan the show has had, and feel that the new guy than was brought in to replace him was a mistake. Feeling Vaun is the true if now only Quinlan of the show they tag him as such.
There’s nothing wrong with that ether. Fans are just going to have to sort thought the Vaun posts to find Quinlan.