Targeted screening finds Covid infection rates of 10 per cent in Silom cluster

Pro-active screenings for coronavirus found 10 percent of people infected in a cluster centred around the gem-market community in the Silom area of Bangkok, the Center for Covid-19 Situation Administration (CCSA) said Friday.

“This is related to the gems market cluster in Chantaburi,” said CCSA spokesman Dr Taweesin Visanuyothin.

Chantaburi on May 8 ordered the temporary closure of a gems market in Muang district after 52 African nationals working there tested positive for the virus.

CCSA reported on May 12 that the cluster had led to 137 cases at a community in Silom, Bang Rak district. They said most of the infected patients are African nationals.

Taweesin said on Friday that 1,016 pro-active tests at the community in Silom found 107 cases on May 12. “This accounts for 10.53 per cent which is considered to be high,” he said.

In comparison, pro-active testing on May 12 at other stations near known clusters in Thupatemi, Klong Toei, Rong Muang, Din Daeng (two stations), Huai Khwang and Lak Si all came back with an infection rate of less than 5.5 per cent.

In total, 7,247 pro-active tests have been conducted at eight stations on May 12 which led to 359 confirmed cases with an infection rate of 4.95 per cent.

“This means that five out 100 people living at known clusters were found to be infected with the virus,” Taweesin said.

The current main clusters in Bangkok ranked by severity are:

  • Din Daeng – (Huai Khwang Market and Din Daeng’s flats community)  
  • Watthana – (Two construction worker sites)
  • Khlong Toei – (A construction worker site and 41 crowed communities)
  • Lak Si – (A construction worker site)
  • Lat Phrao – (An insurance company)
  • Ratchathewi – (A financial company and Pratunam area)
  • Phra Nakhon – (Pak Khlong Talat Market)
  • Dusit – (Maha Nak Intersection and Saphan Khao Market)
  • Pom Prap Sattru Phai – (Klong Thom, Sua Pa, Wong Wien 22, Worachak and Bo Bae)  
  • Suan Luang – (Morawan community)
  • Chatuchak
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