Clinical trials of Russia's Covid-19 vaccine Sputnik V to be conducted in India

Moscow, Oct 17: The Russian Direct Investment Fund (RDIF) and Dr Reddy's Laboratories Ltd have received renewed approval to conduct late-stage clinical trials in India of the Russian Covid-19 vaccine, the sovereign wealth fund said on Saturday.

Large-scale trials of the Sputnik V vaccine in India were first announced and then knocked back by Indian regulators, who said that the scale of Phase I and II trials conducted in Russia earlier this year was too small, requesting that they be repeated.

Following a new agreement, India will now carry out an adaptive phase II and III human clinical trial involving 1,500 participants, RDIF, which is marketing the vaccine abroad, said on Saturday.

Under the deal, Dr Reddy's will conduct the clinical trials and, subject to approval, distribute the finished vaccine in India. RDIF will supply 100 million doses to Dr Reddy's.

Russia, the first country to grant regulatory approval for a novel coronavirus vaccine, is also conducting Phase III trials of Sputnik V in Belarus, Venezuela and the United Arab Emirates.

RDIF has reached agreements with Indian manufacturers to produce 300 million doses of the shot.

A Phase III trial involving 40,000 participants is currently underway in Moscow, with 16,000 people having already received the first dose of the two-shot vaccine.

Interim results are expected to be published in early November.

Indian regulators have agreed to incorporate data, provided by Russia on a weekly basis, from the Moscow trial, a source close to the deal told Reuters.

Russia has also reached an agreement with the biotechnology department of India's Science and Technology Ministry to use its laboratories as a base for the Indian clinical trial, the source said.

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IndiGo meltdown: 200 flights cancelled; Bengaluru hit hard with 42 cancellations

News Network

December 3,2025

IndiGo, India’s largest airline, is battling one of its worst operational disruptions in recent years, with hundreds of delays and cancellations throwing domestic travel into chaos.

Government data on Tuesday showed its on-time performance plunging to 35%, an unusual dip for a carrier long associated with punctuality.

By Wednesday afternoon, airports in Delhi, Mumbai, Bengaluru and Hyderabad had collectively reported close to 200 cancellations, stranding travellers across the country.

Crew Shortage After New Duty Norms

A major trigger behind the meltdown is a severe crew shortage, especially among pilots, following the rollout of revised Flight Duty Time Limitation (FDTL) norms last month.

The rules mandate longer rest hours and more humane rosters — a shift IndiGo has struggled to incorporate across its vast network.

Sources said several flights were grounded due to lack of cabin crew, while some delays stretched upwards of eight hours.

With IndiGo controlling over 60% of India’s domestic aviation market, the ripple effect has impacted airports nationwide.

IndiGo Issues Apology, Lists “Compounding Factors”

In a statement, IndiGo acknowledged the large-scale disruption:

“We sincerely apologise to customers. A series of unforeseen operational challenges — technology glitches, winter schedule changes, adverse weather, system congestion and updated FDTL norms — created a compounding impact that could not have been anticipated.”

To stabilise operations, the airline has begun calibrated schedule adjustments for the next 48 hours, aiming to restore punctuality. Affected passengers are being offered refunds or alternate travel arrangements, IndiGo said.

What the FDTL Rules Require

The FDTL norms, designed to reduce pilot fatigue, cap duty and flying hours as follows:
•   Maximum 8 hours of flying per day
•   35 hours per week
•   125 hours per month
•   1,000 hours per year

Crew must also receive rest equalling twice the flight duration, with a minimum 10-hour rest period in any 24-hour window.

The DGCA introduced these limits to enhance flight safety.

Hyderabad: 33 Flights Cancelled, Long Queues Reported

Hyderabad’s Rajiv Gandhi International Airport saw heavy early-morning crowds as 33 IndiGo flights (arrivals and departures) were cancelled.

The airport clarified on X that operations were normal, advising passengers to contact IndiGo directly for latest flight status.

Cancellations included flights to and from Visakhapatnam, Goa, Ahmedabad, Delhi, Bengaluru, Chennai, Madurai, Hubli, Bhopal and Bhubaneswar.

Bengaluru: 42 Flights Disrupted

Bengaluru’s Kempegowda International Airport recorded 42 cancellations — 22 arrivals and 20 departures — affecting routes to Delhi, Mumbai, Chennai, Hyderabad, Goa, Kolkata and Lucknow.

Passengers Vent on Social Media

Irate travellers took to X to share their experiences. One passenger stranded in Hyderabad wrote: “I have been here since 3 a.m. and missed an important meeting.”

Another said: “My flight was pushed from 1:55 PM to 2:55 PM and now 4:35 PM. I was informed only three minutes before entering the airport.”

Delhi Airport Hit by Tech Glitch

At Delhi Airport, the disruption deepened due to a slowdown in the Amadeus system — used for reservations, check-ins and departure control.

The technical issue led to longer queues and sluggish processing, adding to delays already worsened by staff shortages.

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