History is not funny.
I place for comments around and the medical people.
What the councillors say is clear.
Moscow almost disappeared in 1960.

On the eve of the new 1960s, Moscow was under the threat of spreading a deadly disease - measles. In the USSR, the disease was overcome by universal vaccination in 1936. The doctors didn’t even think it could come back and stopped taking it into consideration. 
However, it still happened... 

The Khrushchev meltdown opened the iron curtain, and the USSR began to actively contact with other states. One of the new friends of the country of the Soviets became India. It was there on December 7, 1959, and the two-time Stalin Prize laureate Kokorekin artist Alexei Alekseevich, who specialized in the creation of propaganda posters. During his two-week vacation, he visited the sights of exotic India and even visited the funerals of the Brahman. 

Immediately after returning to Moscow, the artist had a fever and a severe cough. The patient was hospitalized in Botkin Hospital, where he was diagnosed with the "flu". On the body of Kokorekin appeared a rash, which was written off for allergy from drugs. Alexey Alekseevich was placed in the chamber for the flu. On the third day, it became clear that the artist was dying, and relatives were allowed to visit him. 

In order to determine the disease, a famous academic of medicine Nikolai Kraevsky arrived from Leningrad. He did not make a correct diagnosis. One of the nurses timidly noticed that such symptoms are characteristic of measles, but nobody listened to her. The New Year was on the nose, and the Soviet people rushed to celebrate, so the artist was cremated on December 31. 
Two weeks later, in the 1960s, some patients at Botkin Hospital had the same fever, cough and rash as Kokorekin. The material taken from the skin of one of the patients was sent to the research institute of vaccines and serum. On January 15, 1960, the academician Morozov identified in the material the particles of the virus of naturopathy. 
The news was promptly to the top leadership of the country. It became clear that Moscow and the entire Soviet Union are at a step from an epidemic of a disease that is not treated. 
In front of the personnel of the capital police and the KGB set the task in the shortest possible time to identify all with whom the artist contacted, starting from the moment of his landing on the plane to India. The risk group included passengers of the aircraft, its crew, customs officers, colleagues, friends, relatives. The investigation even found that before returning home, Kokorekin spent a day with his mistress. The scale of work was enormous. They found that for several weeks the patient had contacted several thousand people. Identifying them all was almost unrealistic. 
Medical workers focused on two major outbreaks of the epidemic – the Botkin Hospital and the artist’s family. The Moscow hospital, known throughout the USSR, was transferred to a caste position. No one was allowed into it and no one was released from it. At the same time, the staff, the patients and their relatives were not notified about the reasons for such a regime. The authorities tried to avoid panic, and it gave results. 
Thousands of people were in quarantine. In a short period of time, it was determined that nine people from the staff and three patients were infected in the hospital. Among the relatives and friends of Kokorekin identified seven infected: the second wife, as well as the first who infected his husband and son; the artist's insurance agent and several of his friends. In total, Kokorekin infected 19 people, they in turn infected another 23 people, several of whom passed the disease to three people. Of the 46 patients, three died. 
In these critical days, Moscow doctors, KGB personnel and the police performed a feat. They quickly identified potential patients and isolated them from society. Tested fellow students and teachers of the daughter of Alexei Kokorekin, found all 117 patients who were on the reception of the artist therapist who examined. 

More than 9,000 people were placed in quarantine. During conversations with the representatives of the bodies, potential bearers of measles issued the names of lovers and companions. The artist’s wife admitted that she handed over to the commission to resell things her husband brought from India. Because of the shortage of clothes, which could infect people with a deadly disease, went past the box office. The KGB specialists, using their experience and unlimited capabilities, did the impossible and went out to buyers. 
In 1960 all 7 million inhabitants of Moscow were vaccinated. Among them were those who died. Every week, 1.5 million people were injected, and 10 thousand vaccination brigades were vaccinated, which included medical university students in addition to doctors and health care professionals. Within a month, the outbreak of gout was able to be extinguished.