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Phylogenetic testing compares different virus genomes and helps scientists deduce the index case of a Covid-19 cluster.
SINGAPORE - Phylogenetic testing compares different virus genomes and helps scientists deduce the index case of a Covid-19 cluster.
In the case of the Jurong Fishery Port cluster, the authorities were able to determine that the strains relating to the cluster were of the Delta variant and similar to what was seen in imported cases from Indonesia.
Dr Sebastian Maurer-Stroh, executive director of the Bioinformatics Institute at A Star, said a phylogenetic or family tree is created using viral mutations as markers to compare the virus genomes.
In this family tree, close relatives are grouped together and one can then see which cases had formed a cluster - in this way, one can then deduce the ancestor of a cluster, said Dr Maurer-Stroh.
June 28, 2021
Serology tests detect antibodies in the patient s blood sample- antibodies being the soldiers of the immune system which help the body defeat invaders.
Lianhe Zaobao
SINGAPORE - People who are fully vaccinated against Covid-19 generally do not get seriously ill even if they get infected with the virus. However, they could still transmit it to others.
Associate Professor Raymond Lin, director of the National Centre for Infectious Diseases (NCID) National Public Health Laboratory, told The Straits Times that this was the centre s observation from studying the serology test results of those diagnosed with Covid-19.
Serology tests detect antibodies in the patient s blood sample - antibodies being the soldiers of the immune system which help the body defeat the invader.
Fully vaccinated people protected from Covid-19 but can pass disease to others straitstimes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from straitstimes.com Daily Mail and Mail on Sunday newspapers.