Scores of rescue workers have developed respiratory illnesses and cancer, and the deaths of two emergency response workers and a police detective have been blamed on breathing problems related to the many hours they spent searching for victims.

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Patrick said he was told by staff that his daughter's breathing problems might have been triggered by the weather conditions.

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In infants: Have signs and symptoms included problems with eating or breathing?

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They have trouble breathing and can develop heart disease and other problems.

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Whooping cough can get make infants sick to the point that they may stop breathing and die, or they can have problems with brain damage, Shu said.

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Overweight people often have sleep problems -- most notably sleep apnea, a breathing disorder that causes frequent awakenings -- but it's not clear if they're overweight because of their sleep problems, or if their sleep problems result from being overweight.

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Because of their young age, immature immune system and delicate lungs, they are also more likely to have problems such as pneumonia, apnea (pauses or stoppages in breathing) or seizures related to the infection.

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Health problems have surfaced once, when he was hospitalized in 2011 after having trouble breathing.

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Three of the babies need breathing assistance, but otherwise the eight don't appear to have serious problems, doctors said at a news conference Monday evening.

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But, of course, what the Pakistanis have to give away in order to get this breathing space, this is what is creating the problems and the tension.

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