Huckman mentioned two companies that make anti-virals: GlaxoSmithKline(GKS), which makes Relenza, and Gilead Sciences (GILD), which gets a 20% royalty for Tamiflu, a drug it makes for Roche.

Huckman mentioned two companies that make anti-virals: GlaxoSmithKline(GKS), which makes Relenza, and Gilead Sciences (GILD), which gets a 20% royalty for Tamiflu, a drug it makes for Roche.

On the vaccine side, companies like GlaxoSmithKline, Baxter(BAX) and Crucell (CRXL) stand to benefit, Huckman said.

On the vaccine side, companies like GlaxoSmithKline, Baxter(BAX) and Crucell (CRXL) stand to benefit, Huckman said.

JPMorgan on Monday wrote that "concerns over the swine flu outbreak could weigh on MasterCard (MA) and Visa (V) shares due to fears that cross-border fees may suffer from reduced cross-border travel."Najarian said it might be great opportunity to get into credit card issuers like Visa (V) and Mastercard (MA) if the overselling continues tomorrow. He said Visa would be particularly attractive below $55.

JPMorgan on Monday wrote that "concerns over the swine flu outbreak could weigh on MasterCard (MA) and Visa (V) shares due to fears that cross-border fees may suffer from reduced cross-border travel."Najarian said it might be great opportunity to get into credit card issuers like Visa (V) and Mastercard (MA) if the overselling continues tomorrow. He said Visa would be particularly attractive below $55.

It seems to me that the market was looking for a reason to sell, explained Karen Finerman. And with the swine flu, they found it. But I think it's a tempest in a pot of tea. I’m looking at Grupo Aeroportuario del Pacifico (PAC), a firm that operates airports in Mexico. It could be time to get long.

If you’re looking for swine flu plays, I think Smithfield (SFD) still has upside but Marriott (MAR) is a sell, says Adami.