Govt labels Delta-plus ‘variant of concern’, urges caution

Synopsis: The Government of India has categorised the Delta Plus variant as a ‘variant of concern’.  

What is Delta+ variant? 

• The Delta variant formerly known as B.1.617.2 is believed to be the most transmissible variant of Covid -19 yet. It has been initially detected in India.  
• The Delta plus variant (B.1.617.2.1 or AY.1) has been formed due to a mutation in the Delta variant. 

• A mutation means a change in the genetic sequence of the virus. 

What are the characteristics of Delta plus variant? 

 The Delta plus variant has three important characteristics: 

• Increased transmissibility 
• Binds strongly to receptors of lung cells, and 
• potential reduction in monoclonal antibody response. 

What measures has been suggested by Central Government?  

The Centre has suggested immediate containment measures including: 

• preventing crowds and intermingling of people, 
• widespread testing, 
• prompt contact tracing and 
• vaccine coverage on a priority basis in districts affected by Delta plus variant. 

What is a Variant of Concern (VOC)?   

WHO (World Health Organisation) classifies a variant as a VOC when it is associated with: 

• An increase in transmissibility or detrimental change in Covid-19 epidemiology o 
• Increase in virulence (Ability to cause severe/life-threatening disease) 
• Decrease in the effectiveness of public health measures or available diagnostics, vaccines and therapeutics. 

Source: TOI