Answer based on context:

Coming off their win over the Raiders the Texans played on home ground for an Interconference duel with the Giants. In the first quarter the Texans trailed early when QB Eli Manning made a 6-yard TD pass to WR Hakeem Nicks. Then RB Brandon Jacobs got a 1-yard TD run. This was followed in the 2nd quarter by Manning finding Hicks again on a 12-yard TD pass. The Texans tried to cut the lead when kicker Neil Rackers hit a 38-yard field goal, which was responded by Lawrence Tynes' 45-yard field goal. The Texans' offense managed to break through in the third quarter when RB Derrick Ward got a 1-yard TD run, but was closed off after Tynes made a 42-yard field goal; followed by Manning completing a 4-yard TD pass to WR Steve Smith.

How many quarter did the Texans go without a touchdown?
2