A journalist is among the 15 new coronavirus cases reported in Karnataka, taking the total number of infections to 489, the state government said on Saturday.
"Fifteen new positive cases have been reported from last evening till this noon...Till date 489 COVID-19 positive cases have been confirmed. This includes 18 deaths and 153 discharges," the department said in its mid-day situation update.
Medical Education Minister K Sudhakar, who is also leading the government's efforts against COVID-19 in Bengaluru and is in charge of the state war room, in a tweet confirmed that one journalist from Bengaluru had tested positive.
"#COVID19 Update: From 5 pm, 24th April till 12 noon today A total of 489 cases, 15 positives, 18 deaths & 153 discharges. Positive cases: 15 Bangalore Urban 6 (01 Journalist, 05 from Hongasandra) Belagavi 06 Mandya 01 Chikkaballapura 01 Dakshin Kannada 01," he tweeted.
Five out of six confirmed for infection in Bengaluru are contacts of a 54-year-old labourer, who tested positive earlier this week; while the other, the journalist visited Containment Zones demarcated by BBMP (city civic body).
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A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.
There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.
Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
All six tested positive in Hirebagewadi in Belagavi are secondary contacts of a patient earlier tested positive.
Nine of the 15 cases are men and six are women.
According to sources, the journalist who tested positive is a cameraman with a Kannada news channel.