Unusual Options Activity In TEVA (TEVA)

$TEVA-Bullish option flow detected in Teva (22.05 +1.07) with 30,028 calls trading (1.5x expected) and implied vol increasing over 9 points to 50.80%. . The Put/Call Ratio is 0.08. Earnings are expected on 01/28. The Jan 17th 22.00 Calls are being bought.