Question: How many countries with malaria cases have also had cases of COVID 19?

Answer passage (source: WHO):
page_title: Q&A: Malaria and COVID-19
section_headers: What are the key considerations for countries that are working to eliminate malaria or prevent re-establishment of transmission?
section_content: All of the considerations described above apply to malaria-eliminating
countries and those preventing re-establishment of the disease: efforts must
be sustained to prevent, detect and treat malaria cases while preventing the
spread of COVID-19 and ensuring the safety of those who deliver the services.
Countries that are nearing malaria elimination must protect their important
gains and avoid malaria resurgences. Countries that have eliminated malaria
must remain vigilant for any imported cases of malaria that may be occurring
to prevent reintroduction of the disease.

Reviewer feedback on this answer:
Mentions both malaria and COVID-19 but doesn't specify how many countries have had cases of both.
The information is relevant and does talk about malaria and covid.  However, the specific question is not answered.

Reviewer ratings:
Bad
Could be Improved

Answer passage (source: WHO):
page_title: Q&A: Malaria and COVID-19
section_headers: How many malaria-affected countries have reported cases of COVID-19?
section_content: Malaria-endemic countries in all WHO have **** regions have reported cases of
COVID-19. In the WHO African Region, which carries more than 90% of the global
malaria burden, 45 countries had reported approximately 25 000 cases of the
disease as of 30 April 2020. The latest situation
reports on
the COVID-19 pandemic are available on the WHO website.

Reviewer feedback on this answer:
It appears that a precise number of countries with malaria and covid are given.
Specifies that approximately 45 countries have both endemic malaria and cases of coronavirus.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: WHO):
page_title: Q&A: Malaria and COVID-19
section_headers: What is WHO doing to support malaria-affected countries in the context of COVID-19?
section_content: The WHO Global Malaria Programme is leading a cross-partner
effort to mitigate the negative impact of the coronavirus
in malaria-affected countries and, where possible, contribute towards a
successful COVID-19 response. The work is being carried out in close
collaboration with colleagues based at WHO headquarters, regional offices and
country level.
In March 2020, before the pandemic had secured a strong footing in Africa, WHO
sounded an urgent call for maintaining core malaria prevention and
treatment services while protecting health workers and communities against
COVID-19 transmission. The findings of a modelling
analysis from WHO and partners,
published in April, reinforced the WHO call for continuity of malaria services
during then pandemic.
In collaboration with partners, WHO developed technical guidance for countries
on how to safely maintain malaria prevention and treatment in COVID-19
settings. Tailoring malaria interventions in the COVID-19
response  is consistent with broader WHO
guidance on how
to maintain essential health services during the pandemic.

Reviewer feedback on this answer:
Discusses countries with cases of both coronavirus and malaria, but doesn't say how many there are.
The information presented is important to anyone looking for this answer.  However the answer is not resolved in the passage.

Reviewer ratings:
Could be Improved
Could be Improved