It reappeared gradually in the nineteenth century, but only for short periods and above all for private feasts, where it became an occasion for artistic creations.
After a long absence, the Carnival returned in 1979. The Italian government decided to bring back the history and culture of Venice and sought to use the traditional Carnival as the centrepiece of its efforts.
Masks have always been an important feature of the Venetian carnival. Traditionally people were allowed to wear them between the festival of Santo Stefano (St. Stephen’s Day, December 26) and the end of the carnival season at midnight of Shrove Tuesday (movable, but during February or early March). As masks were also allowed on Ascension and from October 5 to Christmas, people could spend a large portion of the year in disguise.
The Medico della peste (wiki), with its long beak, is one of the most bizarre and recognizable of the Venetian masks, though it did not start out as carnival mask at all but as a method of preventing the spread of disease. The striking design originates from 17th-century French physician Charles de Lorme who adopted the mask together with other sanitary precautions while treating plague victims.