Those unvaccinated children are now entering a vulnerable period in their lives as they move to secondary school.

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Will BAE be vulnerable in that period to an opportunistic bid from one of its US rivals, such as Lockheed?

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For example, online retailers are especially vulnerable during the peak shopping period between Thanksgiving and Christmas and especially on Cyber Monday.

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Children are most vulnerable in areas where conflicts have raged over a long period of time.

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And in that time period is when those people are going to be very vulnerable, and get bought up by others.

FORBES

In a five-day period last week shares of two of the biggest and most vulnerable banks, Citigroup and Bank of America (BoA), fell by 44% and 32% respectively.

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Pensioners are vulnerable and they need to know they have a security of payment over a long period of time.

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Special lessons over a three week period will focus on how text, e-mail and social networking sites target vulnerable youngsters.

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"Following a period when we have heard so many terrible abuses in the care of older people and vulnerable patients, it is important that organisations like the NMC are in the right shape to properly perform their job of protecting patients, " he added.

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