Diseases Without Vaccine: A few days after the arrival of the corona virus, its vaccine has arrived and but there are many diseases which have been there for many years, but its vaccine has not been made.
HIV AIDS Virus- HIV is such a dangerous disease. for which there is no cure. Scientists came to know about this disease 3 decades i.e. 30 years ago. According to the World Health Organization, about 32 million people have died from HIV. Even after many efforts, till date no medicine has been made for this disease. Therefore, to avoid this, abstinence is advised. Sexual intercourse is believed to be the main cause of HIV infection.
Avian influenza – According to reports, the virus of avian influenza (bird flu) was first detected in 1997. Where the first case was reported from Hong Kong. The H5N1 virus is transmitted from bird feces to humans, according to the World Health Organization, a total of 1,565 infections were reported between 2013 and 2017. Where 39 percent of the infected had died. According to the World Health Organization, human-to-human transmission of this virus is unusual. This virus has spread to more than fifty countries of Africa, Asia and Europe.
SARS-CoV- SARS-CoV is the same as Corona virus. Which was revealed in the year 2003. Its first case was reported from China. According to reports, it is believed that this disease came from bats to humans. There is a problem of breathing during this virus. According to reports, in 2003, more than 8000 people were infected in 26 countries. And about 916 people lost their lives due to infection. At present, fewer cases of its infection have been reported.