Official sources have assured that the doctors chose to keep the duke under observation at least until next week because they preferred to act with extreme caution.
The Palace emphasizes that Prince Felipe is in good spirits and has stressed that his ailment is not related to Covid-19.
Carlos, his first-born and first in the line of succession to the British throne, 72 years old, has been the first member of the royal family to go to see him at the hospital.
The Prince of Wales arrived at the medical center in a gray Tesla car at around 3:20 p.m. London time.
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