Herd immunity: The seductive myth of Sweden and her response to COVID-19
While the world's economies shut down in an effort to curb the spread of the novel coronavirus, Sweden has allowed most businesses to stay open.
The strategy apparently relies on “herd immunity,” in which a critical mass of infection occurs in lower-risk populations that ultimately thwarts transmission.
Eusebius McKaiser chats to Wits University clinical infectious disease epidemiologist and vaccinologist professor Shabir Mahdi on why this Scandinavian country has chosen to keep its economy open during a pandemic and what herd immunity means.
What herd immunity means is a sort of indirect form of protection against infectious diseases culminating from when a fear percentage of the population has been infected and developed immunity against it.Professor Shabir Mahdi, Clinical infectious disease epidemiologist and vaccinologist - Wits University
What effectively happens is that because immunity is prevalent in the community, the ability of the virus to transmit between people becomes less successful, he says.
Therefore the ability of a person that is susceptible to being infected with the virus is also reduced. When I say susceptible I am talking about those individuals that don't have any sort of immunity.Professor Shabir Mahdi, Clinical infectious disease epidemiologist and vaccinologist - Wits University
He says herd immunity evolves in two ways, it could either be because of natural exposure to the virus or bacteria.
Alternatively what can happen is that herd immunity can be accelerated through vaccination.
What we have heard about herd immunity is more in a context to protect those individuals who might actually not respond very well to vaccination but by virtue of the rest of the population develop immunity.Professor Shabir Mahdi, Clinical infectious disease epidemiologist and vaccinologist - Wits University
Listen below to the full conversation:
There were 50 new coronavirus-related deaths, bringing the total number to 755.Read More
EWN reporter Nkosikhona Duma says the matter is under investigation and there is no clarity on how the equipment disappeared.Read More
MMC for Public Safety Mally Mokoena says they are working with 33% of staff for drivers license renewal and car registration.Read More
Chris Baragwanath Hospital CEO Dr Nkele Lesia says Level 3 started the number of trauma cases has doubled.Read More
Callers on the Eusebius McKaiser show share views on the reopening of schools.Read More
Nickolaus Bauer on the Eusebius McKaiser Show facilitates a discussion on the different regulations under this new lockdown level.Read More
AgriSA deputy executive director Christo van der Heeder reflects on what is happening with the Land Bank.Read More
Business Day specialist reporter Karyn Maughan says FITA is determined to have the matter heard on 9 and 10 June.Read More
One South Africa Movement founder Mmusi Maimane says Motshekga should resign or be removed from office.Read More
Eusebius McKaiser facilitates a discussion on the state of readiness for employers for employees during this lockdown level.Read More