ISRO launches record 20 satellites in one go

New Delhi, Jun 17: Petrol and diesel prices were increased in metros on Wednesday, marking the eleventh straight day of increase since state-owned oil companies returned to the normal practice of daily reviews following a 12-week pause. With effect from 6 am, the price of petrol was increased by 55 paise per litre, and diesel by 69 paise per litre in Delhi, compared to the previous day. While the price of petrol was revised to Rs 77.28 per litre in the national capital from Rs 76.73 per litre the previous day, the diesel rate was increased to Rs 75.79 per litre from Rs 75.19 per litre, according to notifications from state-run Indian Oil Corporation, the country's largest fuel retailer. In the 11-day period, the price of petrol has been increased by a cumulative Rs 6.02 per litre, and diesel by Rs 6.49 per litre.

International crude oil prices retreated on Wednesday, weighed down by an increase in US crude inventories and worries about a potential second wave of the coronavirus pandemic. Brent crude futures - the global benchmark for crude oil - were last seen trading 1.0 per cent lower at $40.56 per barrel.

State-run oil marketing companies revise the prices of petrol and diesel from time to time, besides aviation turbine fuel (ATF) - or jet fuel - and liquefied petroleum gas (LPG). However, since March 16, the oil companies had kept petrol and diesel prices on hold, possibly due to the volatility in global oil markets.

Fuel retailing in the country is dominated by state refiners - Indian Oil Corporation, Bharat Petroleum Corporation and Hindustan Petroleum Corporation. The three own about 90 per cent of the retail fuel outlets in the country.

New Delhi, Jun 14: Petrol price on Sunday was hiked by a record 62 paise per litre and that of diesel by 64 paise as oil companies for the eighth day in a row adjusted retail rates in line with cost since ending an 82-day hiatus in rate revision.

Petrol price in Delhi was hiked to Rs 75.78 per litre from Rs 75.16 while diesel rates were increased to Rs 74.03 a litre from Rs 73.39, according to a price notification of state oil marketing companies.

Rates have been increased across the country and vary from state to state depending on the incidence of local sales tax or VAT.

The 62 paise a litre increase in petrol and 64 paise hike in diesel price is the highest surge in rates since the daily price revision was started in June 2017.

This is the eighth daily increase in rates in a row since oil companies on June 7 restarted revising prices in line with costs, after ending an 82-day hiatus.

In eight hikes, petrol price has gone up by Rs 4.52 per litre and diesel by Rs 4.64 -- a record increase in rates in any eight days since the daily price revision was introduced.

The freeze in rates was imposed in mid-March soon after the government hiked excise duty on petrol and diesel to shore up additional finances.

Oil PSUs Indian Oil Corp (IOC), Bharat Petroleum Corp Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL), instead of passing on the excise duty hikes to customers, adjusted them against the fall in the retail rates that was warranted because of international oil prices falling to two-decade lows.

The government had first raised excise duty on petrol and diesel by Rs 3 per litre each on March 14 and then again on May 5 by a record Rs 10 per litre in case of petrol and Rs 13 on diesel. The two hikes gave the government Rs 2 lakh crore in additional tax revenues.

State-owned fuel retailers IOC, BPCL and HPCL had frozen petrol and diesel prices since March 16, as if anticipating the government move and set off gains they accrued from continuing drop in international oil prices against the excise duty hike.

They, however, promptly passed the increase in local sales tax or VAT by state governments such as Rs 1.67 increase in VAT on petrol and Rs 7.10 in diesel by the Delhi government on May 4.

The total incidence of excise duty on petrol has risen to Rs 32.98 per litre and that on diesel to Rs 31.83. The excise tax on petrol was Rs 9.48 per litre when the Narendra Modi government took office in 2014 and that on diesel was Rs 3.56 a litre.

The government had between November 2014 and January 2016 raised excise duty on petrol and diesel on nine occasions to take away gains arising from plummeting global oil prices.

In all, duty on petrol rate was hiked by Rs 11.77 per litre and that on diesel by 13.47 a litre in those 15 months that helped government's excise mop up more than double to Rs 2,42,000 crore in 2016-17 from Rs 99,000 crore in 2014-15.

It cut excise duty by Rs 2 in October 2017 and by Rs 1.50 a year later. But it raised excise duty by Rs 2 per litre in July 2019.

It again raised excise duty on March 14 by Rs 3 per litre.

New Delhi, Apr 24: The trajectory of COVID-19 cases could have plateaued and might even fall for some weeks after the lockdown is lifted but India is likely to see a second wave in late July or August with a surge in the number of cases during the monsoon, say scientists.

The timing of the peak will depend on how India is able to control physical distancing and on the level of infection spreads after restrictions are relaxed, they said.

It looks apparent that the trajectory of daily new cases has reached a plateau and eventually it will take a downward fall, maybe for some weeks or even months, Samit Bhattacharya, associate professor at the Department of Mathematics, Shiv Nadar University, said.

Still, we may get a surge of new cases of the same coronavirus and this will be considered a second wave, Bhattacharya explained.

The second epidemic may come back in late July or August in the monsoon, although the peak timing will depend on how we control social distancing during that time, he said.

Rajesh Sundaresan, professor at Bengaluru's Indian Institute of Science (IISc), agreed.

“Once we return to normal activity levels, there is a chance that infection may begin to rise again. China is seeing this to some extent post easing of some restrictions on travel,” Sundaresan, corresponding author of a working paper by researchers at IISc and the Tata Institute of Fundamental Research (TIFR) in Mumbai, said.

On March 25, when the number of coronavirus cases was 618 with 13 deaths, the government announced a nationwide lockdown that was later extended to May 3.

On Friday, the death toll due to COVID-19 rose to 718 and the number of cases to 23,077, according to the Union Health Ministry.

In good news, officials said this week that the doubling rate of cases has slowed down in the period, going from 3.4 days before lockdown to 7.5 days, with 18 states doing better than the national average. The recovery rate has also almost doubled in the last 10 days.

"Looking at the new cases in the past few days, it seems the growth of new daily infection is much slower than earlier. This apparently indicates that we might have reached at the plateau of the growth curve, Bhattacharya said.

He noted that recent studies in China and Europe observed that the infection might relapse in those people who have already recovered from earlier phases.

So, there is no evidence that the earlier infection may help acquire immunity against the second infection. And in that way, the entire population may be vulnerable to the second wave to some extent, said the scientist.

In their study unveiled this week, IISc and TIFR researchers analysed the impact of strategies such as case isolation, home quarantine, social distancing and various post-lockdown restrictions on COVID-19 that might remain in force for some time.

The study modelled on Bengaluru and Mumbai suggests the infection is likely to have a second wave and the public health threat will remain, unless steps are taken to aggressively trace, localise, isolate the cases, and prevent influx of new infections.

The new levels and the peaking times for healthcare demand depend on the levels of infection spreads in each city at the time of relaxation of restrictions, they said.

The lockdown is currently upon us. It has given us valuable time. Let us test, trace, quarantine, isolate, practice better hygiene, search for a vaccine, etc. We should do these anyway, and these are being done. When and how to lift the lockdown is going to be a difficult decision to make, said Sundaresan.

It's clear that it's going to be phased. What our team is focusing on is to come up with tools to help the decision makers assess the public health impact of various choices, he said.

According to the experts, infectious diseases spread via contact between infectious and susceptible people. In the absence of any control measures, an outbreak will grow as long as the average number of people infected by each infectious person is more than one.

Once enough people are immune there will be fewer people susceptible to the infection and the outbreak will die.

However, when an outbreak is brought under control by social distancing and other interventions, it is possible only a small proportion of the population will have been infected and gained immunity, they said.

This means enough susceptible people may remain to fuel a second wave if controls are relaxed and infection is reintroduced.

Until the vaccine comes on the market, we have to remain alert Once sporadic cases occur here and there in the country, we immediately need to implement quarantine or social distancing locally for the people in that region, and also need to perform tests to identify positive cases irrespective of showing symptoms, Bhattacharya explained.

Note that these monsoon months are also flu season in many places of India. So, we should not ignore the early signs of the flu symptoms. Irrespective of symptoms, we need to increase tests in the hotspots to identify people and contain the surge, he said.

Sundaresan added that the timeline for a second wave will depend on a lot of circumstances which may change as the time passes.

Significant testing may have been underway, there may be behavioural changes with people becoming more careful about their hygiene, wearing masks may become more common, etc. All these responses may help restrict the second wave, he said.

A study published in The Lancet journal earlier this month modelled the potential adverse consequences of premature relaxation of interventions, and found it might lead to a second wave of infections.

The finding is critical to governments globally, because it warns against premature relaxation of strict interventions, the researchers said.

While interventions to control the spread of SARS-CoV-2 are in place, countries will need to work toward returning to normalcy; thus, knowledge of the effect of each intervention is urgently required, they said in the study.

According to a recent analysis by the Harvard Chan School of Public Health, the best strategy to ease the critical care burden and loss of life from COVID-19 might be on-again, off-again social distancing.

In the absence of such interventions, surveillance and intermittent distancing may need to be maintained into 2022, which would present a substantial social and economic burden, the researchers wrote.p