[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/04/28/art.laurabush.0909.gi.jpg caption="Former First Lady Laura Bush suggests in her forthcoming memoir that she, her husband, and several aides were poisoned during a 2007 visit to Germany for the G8 summit."](CNN) – Laura Bush is suggesting she, her husband, and several aides were poisoned during a 2007 visit to Germany for the G8 summit – one of several new details in the former first lady's forthcoming memoir, "Spoken from the Heart."

Due to hit bookshelves May 4 but purchased by CNN at a Washington-area bookstore, Mrs. Bush says she and former President George W. Bush became mysteriously sick on the Germany trip to such a degree that the president became bedridden.

According to Mrs. Bush, doctors and the Secret Service investigated the possibility a poisoning had occurred but were unable to make a definitive conclusion.

News reports filed during the event show the White House did disclose Bush missed a series of morning sessions at the summit because he had contracted an apparent virus, but White House officials did not provide further details at that time.

"Nearly a dozen members of our delegation were stricken, even George, who started to feel sick during an early morning staff briefing," Mrs. Bush writes. "[O]ne of our military aides had difficulty walking and a White House staffer lost all hearing in one ear. Exceedingly alarmed, the Secret Service went on full alert, combing the resort for potential poisons."

"George felt so ill that he met with [French President Nicolas] Sarkozy and did not even stand up to greet him," she continues, adding later, "We never learned if any other delegations became ill, or if ours, mysteriously, was the only one."

Excerpts of the book were first published by the New York Times Tuesday.

The 432-page memoir is both a recount of the unique experience of being a first lady and a reflection of the eight years she spent in the White House as her husband's popularity gradually declined. But among the book's most poignant passages are those that delve into Mrs. Bush's involvement in a tragic 1963 car collision in Midland, Texas that killed her good friend who happened to be driving the other car.

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