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Blackpool Coronavirus Weekly Summary

Last Modified 15/04/2021 10:40:49 Share this page

Deaths

The trend in deaths of Blackpool residents is shown in the chart below.  The orange bars show the deaths identified as COVID-19 on death certificates.  The number of deaths quickly came to a peak in mid-April with a slower fall since.  The black line allows a comparison of the total number of deaths currently being recorded each week with the average number we have seen in the last five years.  This gap between the current number of deaths and what we would expect based on the pattern from previous years is often described as the number of ‘excess deaths’.

Deaths that occured up to 26 March 2021 but were registered up to 3 April 2021, Blackpool

Mortality trend 3-4
 Source: Office for National Statistics (ONS) - Death registrations and occurences by local authority
 
    • In the period up to 3 April, 470 residents of Blackpool have COVID-19 recorded on their death certificate.

Comparing the numbers of deaths in different areas is more meaningful if we take account of their population sizes and their age and sex distributions.  This is particularly important for COVID-19, as we know that it disproportionately impacts older people and to some extent males.  The chart below takes these factors into account. All regions recorded increases in mortality rates involving COVID-19 between March and April, followed by decreases in summer 2020. Further spikes occurred over the winter and now mortality from COVID-19 is decreasing across all areas. While Blackpool’s death rate is higher than the England rate, it is similar to the average death rate across the North West as a whole.

Directly standardised mortality rates for deaths due to coronavirus*: March 2020 – February 2021

Mortality DSR Feb 21
Source: Deaths due to COVID-19 by local area and deprivation - Office for National Statistics (ons.gov.uk)

*The number of deaths "due to" the coronavirus (COVID-19) include only where COVID-19 was the underlying (main) cause of death.

Cases

Testing for COVID-19 allows the diagnosis of an individual, but also allows us to track the progress of the epidemic.  Testing has been undertaken in two ‘pillars’:

    • Pillar 1: swab testing in Public Health England (PHE) labs and NHS hospitals for those with a clinical need, and health and care workers
    • Pillar 2: swab testing for the wider population, as set out in government guidance

Pillar 1 testing has been undertaken since very early in the epidemic, whereas pillar 2 testing was introduced gradually from mid-April.  The chart below tracks pillar 1 and pillar 2 confirmed cases, for Blackpool residents over time.  

Blackpool - COVID-19 Daily lab-confirmed cases to 11 April March 2021

Cases trend 11-4
Source: https://coronavirus.data.gov.uk
 
    • To date (11 April 2021) there have been 9,172 confirmed cases in Blackpool since the outbreak began.
    • This is roughly equal to 66 people out of every 1,000 that live in the town.
    • In the 7 days to the 7 April, 17 residents tested positive for COVID-19, which represents a weekly rate of 12.2 per 100,000 residents.
    • In the week ending 7 April, 0.4% of tests taken by residents in Blackpool were positive. 

Blackpool data

Each week Public Health England publishes the number of positive cases of COVID-19 recorded in each middle super output areas (MSOAs). Where the number of cases are below 3, these have been suppressed to maintain confidentiality.

View the latest week's count for your MSOA (enter your postcode)

Weekly rate of COVID-19 cases per 100,000 population, tested under Pillar 1 and 2, by upper-tier local authority,  29 March - 4 April 2021

Map 4 Apr

Source: Public Health England - National COVID-19 surveillance reports

 

Coronavirus (COVID-19) Infection Survey pilot

COVID-19 can present as a mild illness in many people and can be totally asymptomatic in others.  This means that many people who have COVID-19 will not be tested for the virus, and therefore testing cannot give us a complete picture of what is happening.  The Office for National Statistics (ONS) and the University of Oxford are conducting the Coronavirus Infection Survey Pilot to assess the incidence (the number of new cases per week) and the prevalence (the number of people who have the virus at any one time) of COVID-19, as well as to gain further insight into what factors influence catching the virus.

    • Prevalence: An estimated 161,900 people (95% credible interval: 142,000 to 183,200) within the community population in England had COVID-19 in the week ending 3 April 2021, equating to around 1 in 340 individuals.

Modelling suggests that the percentage of people testing positive in England was likely level over the two weeks up to 3 April 2021. There are early signs of an increase in the latest week, which balances out a small decrease seen the previous week so the trend over the two-week period is broadly level. The highest percentage of people testing positive was observed in the North West and Yorkshire and The Humber. The percentage of people testing positive increased in the North West and there were early signs of an increase in the South East. In the same week, the percentage of people testing positive continued to decrease in the South West, and there were early signs of a decrease in the North East.

The percentage of people testing positive in England increased in those aged 50 to 69 years. There were also early signs of an increase in the percentage of people testing positive in those in school Year 12 to age 24 years. 

Caution should be taken in over-interpreting small movements in the latest trends.

The chart below present estimates of infection rates over time. The estimate shows the number of infections has decreased in recent weeks.

Official estimates of the percentage of the population in England testing positive for the coronavirus (COVID-19) on nose and throat swabs from 3 May 2020

Case estimate 3 Apr
Source: ONS - COVID-19 Infection Survey
Notes:
1.These statistics refer to infections reported in the community, by which is meant private households. These figures exclude infections reported in hospitals, care homes or other institutional settings.
2.It is important to note that the results for the most recent period are provisional, as the CIS is still receiving swab test results. This may result in further revisions to the figure.
 

R Value

The reproduction number (R) is the average number of secondary infections produced by 1 infected person.

An R number of 1 means that on average every person who is infected will infect 1 other person, meaning the total number of new infections is stable. If R is 2, on average, each infected person infects 2 more people. If R is 0.5 then on average for each 2 infected people, there will be only 1 new infection. If R is greater than 1 the epidemic is generally seen to be growing, if R is less than 1 the epidemic is shrinking.

R is not the only important measure of the epidemic. R indicates whether the epidemic is getting bigger or smaller but not how large it is. The number of people currently infected with coronavirus (COVID-19) – and so able to pass it on – is very important. 

The R value cannot be measured or calculated directly but must be inferred from the trend observed in epidemiological data such as hospital admissions, ICU admissions and deaths. 

The estimated R values for areas with smaller populations are much less certain, as there is less information available to produce a model.  A number of models have been created to estimate an R value for the North West of England.  These models currently suggest the R value for the North West is similar to the value for the United Kingdom as a whole. 

Latest R number range for the UK -

Range for the UK                  0.8 - 1.0

 

 

 

 

Range for the North West  0.8 - 1.0

 

 

Last updated on Friday 9 April 2021

Growth Rate

The growth rate reflects how quickly the number of infections are changing day by day and it is an approximation of the change in number infections each day. If the growth rate is greater than zero (+ positive), then the disease will grow. If the growth rate is less than zero (- negative) then the disease will shrink.

The size of the growth rate indicates the speed of change. A growth rate of +5% will grow faster than one with a growth rate of +1%. Likewise, a disease with a growth rate of -4% will be shrinking faster than a disease with growth rate of -1%.

Latest growth rates (percentage per day)

Range for the UK                        -4% to 0%            

 

 

Range for the North West        -4% to 0% 

 

 

Last updated on Friday 9 April 2021

For further information, please see The R number and growth rate in the UK