Salvioli's diffusing vaccine was an Italian vaccine against tuberculosis used from 1948 until 1976, formulated by professor Gaetano Salvioli of the University of Bologna. The VDS was for some decades the Italian competitor of the French BCG vaccine against tuberculosis.
History
The VDS, definitively standardized between 1948 and 1953 by Professor Gaetano Salvioli, originated first in the studies and vaccine products of Professor Edoardo Maragliano and Professor Giovanni Petragnani, physiologist and rector of the University of Siena. If Maragliano could boast, in 1903, at the World Congress of Medicine in Madrid that he was the first to develop an anti-tuberculosis serum with killed bacilli, Petragnani further developed his previous experiences and from 1927 to 1935 defined the Italian anti-tuberculosis vaccine under the name AIP. When Petragnani interrupted his studies and applications, Professor Gaetano Salvioli continued his studies and applications. From 1935 to 1948 Salvioli proceeded to the formulation of a vaccine called in that period VPS.
Composition
The VDS consisted of Mycobacterium tuberculosis, killed by heat and added to ferment hyaluronidase. One dose for newborns consisted of "a single intradermal injection, carried out at about half of the palmar face of the forearm, is used to introduce into the newborn baby a dose N of lyophilized anti-tuberculosis vaccine consisting of human Koch bacilli and cattle killed rapidly by heat. This dose 0.68 mgr of human bK plus 0.07 mgr of bovine bK, to which added 6 V units. of Jalovis all in 0.2 cc of solvent
The ground Petragnani
The composition and layout of the land Petragnani was as follows. One took 150 cubic centimeters of milk to which were added 1 gram of peptone, 6 grams of potato starch and a peeled potato washed and in pieces. It was brought in bain-marie boiling and shaken everything until the ground had assumed a consistency of sticky type. It was left, always in a bain-marie for about another 30 minutes. It was cooled to about 40 degrees and added 4 eggs and a whole yolk. We filtered through sterile gauze in a graduated cylinder and we added to the filtrate 3% of glycerine and 4% of an aqueous solution to 2% of malachite. It was then distributed in large tubes and it was coagulated at 80-85° for 30 minutes by means of a device designed by Petragnani himself, which provided for a thermoregulator and special large inclined tubes so that the soil solidified like a flute beak.
Areas of application
In the second post-war period, the spread of TB in Italy was still very high, but antituberculous vaccination was not mandatory. The bibliography of the time indicates that from 1948 to 1970 the VDS was applied very widely in different parts of Italy. In 1970 it was declared that about 100,000 vaccinations had been performed with positive results. It was widely applied in the municipality and province of Bologna, in particular at the pediatric clinic of the University of Bologna, directed by Professor Gaetano Salvioli himself. Over the years there were several Italian centers that applied the "Italian-style vaccine" as they used to say at the time to distinguish it from the "French-style vaccine", the competitor BCG. The VDS was also applied abroad: in Osaka in Japan, Czechoslovakia, Poland, Kolwezi. In the area of Bologna up to 80% of newborns were vaccinated. In the province of Venice, the Consortium Antitubercolare Provincial vaccinated between 1953 and 1958 about 16 000 people, especially primary school children.
The involuntary experiment of Dolo (Venice)
Between 1938 and the first months of 1943 Professor Sandro Taronna of which 54 were vaccinated with the Italian vaccine VPS. Disgrace wanted that tuberculosis also entered into the sanatorium, causing several victims. This involuntary situation was studied after the war for about 10 years as an exceptional case. Well, after a year of forced cohabitation because of the war, of the 54 vaccinated survived in 49. They died in five but was verified by autopsies that it happened for other causes. Of the 78 unvaccinated survived in 48 but died 12 for tbc. The other 18 died from other causes.
The two producers of the VDS
The Italian anti-tubercular vaccine VDS was initially produced by the company Alfa Farmaceutici of Bologna of Dr Marino Golinelli. Considering the excellent results and the spread that had the VDS, between 1956 and 1958 the ISM in Milan, then led by the Honorable Giovanni Battista Migliori, acquired the production rights from Alfa. The ISM of Milan was the largest public company of serums and vaccines in Italy. ISM was, from 1894 to 1994, a non-profit institution entirely owned by the Municipality of Milan, with a plant in via Darwin in Milan. In the two-year period 1956–1958 ISM produced six supplies. In the summer of 1958, however, he gave up the production of the vaccine because its 6th supply of 3000 pieces, turned out not to correspond to the protocol provided by Professor Gaetano Salvioli. This batch caused an anomalous vaccination that involved, with a plague at the point of inoculation, 2797 schoolchildren from the province of Venice and infants of Ferrara and Trieste. The plague took several months to heal. From 1959, until the decision of the Ministry of Health to officially adopt the BCG in Italy, the production of VDS returned to the companies of Dr. Marino Golinelli.
