The Centre said the upsurge of COVID-19 cases is happening in cities and the Omicron variant is the predominant circulating strain.
Head of epidemiology and communicable diseases at Indian Council of Medical Research Dr Raman R Gangakhedkar said 80 out of 100 infected people do not show any symptoms.
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The Union health ministry said 11 states have over one lakh active COVID-19 cases, 17 have less than 50,000 cases while eight have active cases between 50,000 and one lakh.
People must also avoid mass gatherings, and new year celebrations need to be at low intensity, the government said.
As the country battles the second wave of COVID-19, the government Thursday said the virus may emerge again and so preparations have to be made at the national level in collaboration with states, infrastructure needs to be ramped up while curbs and appropriate behaviour must be followed.
Two cases of the new Omicron variant of coronavirus have been detected in Karnataka, the Union government said on Thursday while asking people not to panic but follow Covid-appropriate behaviour and get vaccinated without delay.
According to the latest data available from the Centre and the states in the night, the total number of Omicron cases in the country was around 1,200.
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Timely, proactive, and graded strategy initiatives for effective coronavirus infection management in the country, led by the Centre and implemented by the states and Union Territories, have ensured that the actual COVID-19 caseload remains manageable.
Currently, the country is using two 'made-in India' jabs -- Covishield and Covaxin -- to inoculate its billion-plus population and has administered 20 crore doses since launching the world's largest vaccination drive in mid-January. A third vaccine, Russian-made Sputnik V, has been approved by the government and is being used on a smaller scale at present.
Responding to a question over an Indian Council of Medical Research study which stated that 40 out of 104 people having severe acute respiratory infection and later tested positive for coronavirus did not have any recent international travel history or contact with any confirmed cases of the disease, senior official of the ministry Lav Agarwal asserted, "No community transmission has happened in the country so far. There is no need to panic."
71 districts reported Covid case positivity rate of more than 10 per cent in the week from June 23 to 29, the government said, adding that the second wave of COVID-19 is not over.
The markaz (centre) in the south Delhi neighbourhood organised a Tabligh-e-Jamaat from March 1-15 and at least 2,000 people, including foreigners and Indians from across the country, attended it.
The Reproduction number or Rt refers to how many people an infected person infects on average. In other words, it can tell how efficiently a virus is spreading.
Nearly half of all coronavirus patients in the country have been cured, taking the recovery rate to over 48 per cent.
During a briefing on the COVID-19 situation, joint secretary in the ministry Lav Agarwal also said about 2.94 per cent of the active COVID-19 cases needed oxygen support, 3 per cent needed intensive care units (ICU) and 0.45 per cent required ventilator support.
The outcome ratio of COVID-19 -- the ratio of recoveries and deaths of closed cases -- was recorded at 90:20.
These testing kits will be used for surveillance and to monitor whether coronavirus hotspots in the country are increasing or decreasing.
The districts are Gondia (Maharashtra), Raj Nand Gaon (Chhattisgarh), Davangiri (Karnataka), South Goa, Wayanad and Kottayam (Kerala), West Imphal (Manipur), Rajouri (J&K), Aizwal West (Mizoram), Mahe in Puducherry, SBS Nagar in Punjab, Patna, Nalanda and Munger in Bihar, Pratapgarh in Rajasthan, Panipat, Rohtak and Sirsa in Haryana, Pauri Garhwal in Uttrakhand and Bhadradari Kothagudem in Telangana.
The official said in general, there are various types of fungal infections such as candida, aspergillosis, cryptococcus, histoplasmosis and coccidioidomycosis. Mucormycosis, candida and aspergillosis are the ones observed more in those with low immunity, he said.
The govt said that states have been asked to classify districts which have reported a higher number of cases as hotspots, the districts where cases have been reported as non-hotspots, and green zones where no cases have been reported.
Addressing a press conference, NITI Aayog Member (Health) Dr V K Paul said the question of the third wave keeps coming up because the population is still 'very vulnerable' to the infection.
As the SARS-CoV2 evolves and mutates further, it is necessary to be prepared for new waves, Principal Scientific Adviser K VijayRaghavan cautioned on Wednesday, even as he said ferocity of the second wave of coronavirus in the country was not predicted.
The Indian Council of Medical Research will start national-level sero surveys to assess the spread of Covid-19 and all states/Union territories should also be encouraged to conduct them so that information from all geographies can be collected, the Union health ministry said on Friday.
The government said it had been evaluating the implementation of the decentralised model of vaccination since its launch on May 1 and that the decision to centralise it again was taken after detailed deliberations and following requests by some states, amid claims by the Opposition that the policy change was due to the Supreme Court's intervention.
Sources said several Tablighi Jamaat members at different quarantine centres have also volunteered to donate their plasma for the recovery of COVID-19 patients. A Delhi government official said the process of taking plasma from the Tablighi Jamaat members has started.
A steady decline in new COVID-19 cases has been recorded in India for the last 20 days, with 24 states witnessing a dip in active cases since the last week, the Union health ministry said.
Joint Secretary in the Ministry of Health Lav Agarwal said that India has a stock of 3.28 crore tablets of hydroxychloroquine, which is three time more than the projected requirement of one crore tablets in the country for the coming week and that tie-ups have been made for additional supply of 2 to 3 crore tablets for the future need.
"Despite the high number of cases reported so far, we have been able to contain the spread to under 2 pc of population," said Health Ministry Joint Secretary Lav Agarwal.
'Scientifically the effect and change of Delta plus has to be watched through our INSACOG system. This has to be detected and we have to see its presence in the country'
The government also said the coronavirus tracking app Aarogya Setu is secure as it has been designed keeping in mind the privacy of people and is playing a crucial role in India's fight against COVID-19.
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Eleven states -- Maharashtra, Karnataka, Uttar Pradesh, Kerala, Rajasthan, Gujarat, Chhattisgarh, Andhra Pradesh, Tamil Nadu, West Bengal and Bihar -- cumulatively account for 78.18 per cent of the active cases in the country, according to the health ministry.
In a press briefing, officials said the virus outbreak is under control in the country and credited a robust surveillance network along with implementation of the lockdown and other containment measures for it.
Addressing a press briefing, Health Ministry's Joint Secretary Lav Agarwal said the government has taken early preemptive action to identify COVID-19 hotspots in the country.
The ministry also said about 14 most affected countries with a cumulative population almost equal to that of India have reported 55.2 times more COVID-19 deaths and 22.5 times more cases.
Joint Secretary in the health ministry Lav Agarwal said it is wrong to just look at the total number of cases and state that India has the seventh highest number of cases as the population of countries also should be taken into account. About 14 countries with a cumulative population almost equal to that of India have reported 55.2 times more COVID-19 deaths, he said.
As cases of 'black fungus' among COVID-19 patients in the country rise to cross 7,000, the Centre on Thursday urged all states and union territories to declare it as a notifiable disease under the Epidemic Diseases Act to ensure mandatory surveillance to tackle the 'new challenge'.
'We have the technical expertise, and international collaborations. We also have robust real-time data. We are a university of pandemic management. If the ministry neglects the role of NCDC, it is the loss of the country'