Consecrated virgins say they are "disappointed" by the Vatican’s new guidance that literal virginity is not necessary.

A document released earlier this month says that a woman does not need to have "kept her body in perfect continence" to become a consecrated virgin.

The Vatican document, entitled Ecclesiae Sponsae Imago, says that the "call to give witness to the Church’s virginal, spousal and fruitful love for Christ is not reducible to the symbol of physical integrity.

"Thus to have kept her body in perfect continence or to have practised the virtue of chastity in an exemplary way, while of great importance with regard to the discernment, are not essential prerequisites in the absence of which admittance to consecration is not possible."

Women who wish to be consecrated as virgins take part in a ceremony in which they dress in white and pledge themselves to Christ. There are thought to be around 5,000 worldwide.

Once they have joined the vocation, they wear wedding rings and cannot marry or engage in sexual relationships.

The US Association of Consecrated Virgins issued a statement calling the document "deeply disappointing" and said the advice was "shocking".

"The entire tradition of the Church has firmly upheld that a woman must have received the gift of virginity – that is, both material and formal (physical and spiritual) – in order to receive the consecration of virgins," it said.