Contagion

A person in China scans a QR code with a smartphone to register their real name before getting off a bus in Wuhan, China. Zhang Chang/China News Service via Getty Images

The US is rolling out digital contact tracing. How has it been working in other countries?

vox.com - by Shirin Ghaffary - April 18, 2020

If and when lockdown restrictions are lifted in the US, would you agree to let the government anonymously track your interactions with people within a 6-foot radius to control the spread of Covid-19?

That’s an increasingly urgent question as President Trump and state governors debate how and when to safely reopen the US economy — and as technology is being touted as a solution that would help people reenter public life.

And tech giants are stepping up. Last week, Apple and Google announced a plan to turn phones into opt-in Covid-19 tracking machines that would, if all goes as planned, make it easier for health officials to identify and alert people if they’ve been exposed to the virus.

kron4.com - by: Alexa Mae Asperin - April 9, 2020

Researchers in Finland have released a shocking simulation that apparently shows how respiratory droplets from just one cough in a grocery store can linger in the air for “several minutes” and travel across two aisles, possibly infecting other shoppers nearby with coronavirus.

Aalto University, the Finnish Meteorological Institute, VTT Technical Research Centre of Finland and the University of Helsinki studied how aerosolized particles released from the respiratory tract when coughing, sneezing or even talking flow through the air.

Preliminary results indicate that tiny particles carrying the coronavirus can linger in the air for longer than originally thought, reinforcing the importance of completely avoiding crowded spaces, or at the very least following social distancing guidelines.

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Researchers in Shanghai found low levels of coronavirus antibodies in some people who had recently recovered from Covid-19. Photo: DPA

Scientists in Shanghai say some recovered patients show no signs of the neutralising proteins

Early-stage findings could have implications for vaccine development and herd immunity, they say

CLICK HERE - RESEARCH - medRxiv - Neutralizing antibody responses to SARS-CoV-2 in a COVID-19 recovered patient cohort and their implications - April 6, 2020

scmp.com - by Stephen Chen - April 7, 2020

Researchers in Shanghai hope to determine whether some recovered coronavirus patients have a higher risk of reinfection after finding surprisingly low levels of Covid-19 antibodies in a number of people discharged from hospital.

A team from Fudan University analysed blood samples from 175 patients discharged from the Shanghai Public Health Clinical Centre and found that nearly a third had unexpectedly low levels of antibodies.