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Spread of COVID-19's Delta variant will increase cases, put pressure on healthcare: WHO

Cases of the Alpha variant have been reported in 178 countries, territories or areas, while 123 countries reported cases of the Beta variant and 75 countries reported cases of the Gamma variant.

Published: 14th July 2021 10:44 AM  |   Last Updated: 14th July 2021 10:44 AM   |  A+A-

A woman waits to get coronavirus testing at a public health center in Seoul, South Korea

A woman waits to get coronavirus testing at a public health center in Seoul, South Korea. (Photo| AP)

By PTI

UNITED NATIONS/ GENEVA: The increased transmissibility associated with the COVID-19's Delta variant is likely to substantially increase cases and put a greater pressure on healthcare systems, particularly in the contexts of low vaccine coverage, the WHO has warned.

In its COVID-19 Weekly Epidemiological Update released on Tuesday, the World Health Organisation said that an overall rise in COVID-19 cases due to the Delta variant is reported across all WHO regions.

As of July 13, at least 111 countries, territories and areas have reported detection of the Delta variant, and this is expected to continue to increase, becoming the dominant variant globally in the coming months.

"The increased transmissibility associated with the Delta variant is likely to result in substantial increases in case incidence and greater pressure on healthcare systems, particularly in contexts of low vaccine coverage," it said.

Globally, cases of the Alpha variant have been reported in 178 countries, territories or areas, while 123 countries reported cases of the Beta variant, 75 countries reported cases of the Gamma variant. The update said that the Delta variant has shown higher transmissibility than other Variants of Concerns (VOCs) identified to date. "The increased transmissibility means that it is likely to become the dominant variant globally over the coming months," the update said.

It said that the emergence of more transmissible variants, coupled with the relaxation and inappropriate use of Public Health and Social Measures (PHSM) and increased social mobility and mixing and low vaccination coverage in many countries continue to contribute to rapid surges in incidence, hospitalisations and deaths in many countries.

"Moreover, in large parts of the world, there remain gaps in epidemiological surveillance, testing and genomic sequencing, and this limits our ability to monitor and assess the impact of current and future variants in a timely manner," it said.

The update noted that as countries gradually resume non-essential international travel, the introduction of risk mitigation measures aiming to "reduce travel-associated exportation, importation and onward transmission of SARS-CoV-2 should be based on thorough risk assessments conducted systematically and routinely".

Almost a quarter (24.7 per cent) of the world's population has received at least one dose of a COVID-19 vaccine - over three billion doses administered. However, there are vast inequities in vaccine distribution and administration with the majority of vaccines administered in a small number of high and upper-middle-income countries.

The update of the COVAX facility has been working to reduce this gap, but a large proportion of the world's population remains susceptible to SARS-CoV-2 infection. "The breadth and quality of evidence of the efficacy and effectiveness of current vaccines against emerging variants remains limited; nevertheless, the available evidence suggests full vaccination offers high levels of protection against severe disease and death for all four VOCs, with mixed evidence as to the impacts on infection, mild-moderate disease and transmission," it added.

"Virus evolution and the phenotypic impacts of all variants, including potential immune escape, require close monitoring and assessment, including the possible need for future adjustments to vaccine composition, vaccination strategies and/or coverage targets," it said.

The global number of new cases reported last week (July 5-11, 2021) was nearly 3 million, a 10 per cent increase as compared to the previous week. Following a steady decline for nine consecutive weeks, the number of weekly deaths increased by 3 per cent this week compared to the previous week, with over 55,000 deaths reported, the update said.

Globally, COVID-19 incidence increased with an average of over 4,00,000 cases reported each day as compared to 3,70,000 from the previous week. The cumulative number of cases reported globally is now over 186 million and the number of deaths exceeds 4 million.

This week, all regions with the exception of the Americas recorded an increase in incidence. The Eastern Mediterranean Region recorded the largest increase in incidence (25 per cent) followed by European Region with a 20 per cent increase as compared to the previous week.

The African Region had the smallest percentage increase in incidence with a 5 per cent increase. However, the region recorded a 50 per cent increase in the number of deaths as compared to the previous week.

The South-East Asia Region also recorded a significant increase in the number of deaths, reporting a 26 per cent increase as compared to the previous week. The Region of the Americas reported a 3 per cent decline in incidence and an 11 per cent decrease in the number of deaths reported last week.

The update said that the highest number of new cases were reported from Brazil (333,030 new cases; 9 per cent decrease), India (291,789 new cases; 7 per cent decrease), Indonesia (243,119 new cases; 44 per cent increase), the United Kingdom (210,277 new cases; 30 per cent increase) and Colombia (174,320 new cases; 15 per cent decrease).

In the South-East Asia Region, the highest numbers of new deaths were reported from India (6,035 new deaths; 0.4 new deaths per 100,000; a 4 per cent decrease), Indonesia (5,882 new deaths; 2.2 new deaths per 100,000; a 71 per cent increase) and Bangladesh (1,354 new deaths; 0.8 new deaths per 100,000; a 52 per cent increase).



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