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Vietnam: Three Covid-19 community transmissions carry Indian double mutant strain

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  • Vietnam: Three Covid-19 community transmissions carry Indian double mutant strain

    Three Covid-19 community transmissions carry Indian double mutant strain

    By Le Nga May 4, 2021 | 04:13 pm GMT+7

    Three Covid-19 patients in northern Vietnam have been infected with an Indian mutant of the novel coronavirus, marking the nation's first community transmissions with this strain.

    The patients in Vinh Phuc Province contracted the virus from a group of Chinese experts over the weekend. The virus has been identified as the B.1.167 variant, a "double mutant" strain.

    This marks the second time that the B.1.167 strain has been found in Vietnam but the first among community transmissions.



    Okieman Comment: Take the time to read all of this article. Is B.1.617 spreading in northern Vietnam. A bit of an odd read.

  • #2
    From the article above:

    The three patients in Vinh Phuc with the Indian virus strain are among six female staff of a bar who contracted the virus after coming into close contact with five Chinese male experts.

    The experts had arrived in Vietnam early April and had also been quarantined at the Nhu Nguyet 2 hotel from April 9-23, during which time they tested negative thrice.

    After completing their quarantine, the men began working at the Trung Bac A Company in the province and continued to have their health monitored for 14 days at another hotel by local medical staff.

    However, the experts left their hotel and visited many localities in northern Vietnam from April 23 to 25. On April 28, they returned to China through the Huu Nghi border gate in Lang Son Province. Four of them have since been confirmed positive for the virus by Chinese authorities.


    • #3
      COVID-19 Stages Another Comeback in Vietnam

      A recent spate of community transmissions is likely to delay the country?s planned resumption of international tourism.
      By Sebastian Strangio
      May 04, 2021


      More concerning than the spread of these cases is the fact that they have been linked to overseas arrivals who have tested positive even after completing a mandatory two-week quarantine, suggesting the presence of COVID-19 strains with longer incubation periods. Among these were a Vietnamese man returning from Japan and a group of Chinese nationals.

      According to Vietnamese media reports, the most recent case involved an Indian national who tested positive for an infectious new strain of the coronavirus after arriving in the country and completing a two-week quarantine in the northern city of Hai Phong, during which time he tested negative twice.

      The government has responded by ordering that those currently in 14-day quarantine must remain in isolation after their period of confinement ends. The government has also announced that the mandatory quarantine period will be extended by a length to be determined in the coming days.



      • #4
        See Singapore thread here:

        They have gone to a 21 day quarantine period in Singapore.


        • #5
          Okieman Comment: Maybe this is what is driving a longer quarantine period. (Also posted in the Singapore thread.)

          Demand for longer quarantine period among common and uncommon COVID-19 infections: a scoping review



          This study provides evidence that the incubation period distribution of COVID-19, especially the large percentiles, can be influenced by the carriers remained infectious at the post-quarantine stage. We not only suggest a proper quarantine duration for COVID-19, but also delivers more accurate estimates of the COVID-19 incubation period, which also plays a fundamental role in estimating other epidemiological parameters and statistical prediction modeling. As infectious outliers account for a certain proportion among all kinds of infections, in this study, the results of 95th and 99th percentiles of both two distributions were estimated to exceed fourteen days. Although such duration is applicable in most cases, to further prevent possible transmissions induced and facilitated by them, especially in regions with insufficient testing resources, strengthening the quarantine measures up to 21-days could be prudent for high-risk scenarios.